Search a number
-
+
127004201 = 1000912689
BaseRepresentation
bin1111001000111…
…10111000101001
322211222111000022
413210132320221
5230003113301
620334050225
73101342432
oct744367051
9284874008
10127004201
1165766155
1236649975
132040a01c
1412c20489
15b23ad1b
hex791ee29

127004201 has 4 divisors (see below), whose sum is σ = 127026900. Its totient is φ = 126981504.

The previous prime is 127004197. The next prime is 127004219. The reversal of 127004201 is 102400721.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 102400721 = 251407971.

It can be written as a sum of positive squares in 2 ways, for example, as 81090025 + 45914176 = 9005^2 + 6776^2 .

It is a cyclic number.

It is not a de Polignac number, because 127004201 - 22 = 127004197 is a prime.

It is a super-3 number, since 3×1270042013 (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 127004201.

It is not an unprimeable number, because it can be changed into a prime (127004231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665 + ... + 16353.

It is an arithmetic number, because the mean of its divisors is an integer number (31756725).

Almost surely, 2127004201 is an apocalyptic number.

It is an amenable number.

127004201 is a deficient number, since it is larger than the sum of its proper divisors (22699).

127004201 is a wasteful number, since it uses less digits than its factorization.

127004201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22698.

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 127004201 is about 11269.6140572781. The cubic root of 127004201 is about 502.6581118415.

Adding to 127004201 its reverse (102400721), we get a palindrome (229404922).

The spelling of 127004201 in words is "one hundred twenty-seven million, four thousand, two hundred one".

Divisors: 1 10009 12689 127004201