Search a number
-
+
120200401 = 503238967
BaseRepresentation
bin1110010101000…
…01110011010001
322101011210221201
413022201303101
5221232403101
615532151201
72656454326
oct712416321
9271153851
10120200401
1161939382
1234308501
131bb971c9
1411d6cb4d
15a844e01
hex72a1cd1

120200401 has 4 divisors (see below), whose sum is σ = 120439872. Its totient is φ = 119960932.

The previous prime is 120200393. The next prime is 120200407. The reversal of 120200401 is 104002021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 104002021 = 234521827.

It is a cyclic number.

It is not a de Polignac number, because 120200401 - 23 = 120200393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120200407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118981 + ... + 119986.

It is an arithmetic number, because the mean of its divisors is an integer number (30109968).

Almost surely, 2120200401 is an apocalyptic number.

It is an amenable number.

120200401 is a deficient number, since it is larger than the sum of its proper divisors (239471).

120200401 is an equidigital number, since it uses as much as digits as its factorization.

120200401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239470.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 120200401 is about 10963.5943467460. The cubic root of 120200401 is about 493.5168351424.

Adding to 120200401 its reverse (104002021), we get a palindrome (224202422).

The spelling of 120200401 in words is "one hundred twenty million, two hundred thousand, four hundred one".

Divisors: 1 503 238967 120200401