Search a number
-
+
12002107 = 13923239
BaseRepresentation
bin101101110010…
…001100111011
3211120202210111
4231302030323
511033031412
61105125151
7204005365
oct55621473
924522714
1012002107
1168583a7
1240297b7
132642c50
141845d35
1510c12a7
hexb7233b

12002107 has 4 divisors (see below), whose sum is σ = 12925360. Its totient is φ = 11078856.

The previous prime is 12002093. The next prime is 12002147. The reversal of 12002107 is 70120021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70120021 = 151464371.

It is a cyclic number.

It is not a de Polignac number, because 12002107 - 219 = 11477819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 923239 = 12002107 / (1 + 2 + 0 + 0 + 2 + 1 + 0 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002147) 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, 461607 + ... + 461632.

It is an arithmetic number, because the mean of its divisors is an integer number (3231340).

Almost surely, 212002107 is an apocalyptic number.

12002107 is a deficient number, since it is larger than the sum of its proper divisors (923253).

12002107 is an equidigital number, since it uses as much as digits as its factorization.

12002107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923252.

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 12002107 is about 3464.4057210437. The cubic root of 12002107 is about 228.9562472427.

Adding to 12002107 its reverse (70120021), we get a palindrome (82122128).

The spelling of 12002107 in words is "twelve million, two thousand, one hundred seven".

Divisors: 1 13 923239 12002107