12104020642 has 32 divisors (see below), whose sum is σ = 22105036800. Its totient is φ = 4855195728.

The previous prime is 12104020603. The next prime is 12104020681. The reversal of 12104020642 is 24602040121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12104020603) and next prime (12104020681).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252042 + ... + 296197.

It is an arithmetic number, because the mean of its divisors is an integer number (690782400).

Almost surely, 2^12104020642 is an apocalyptic number.

12104020642 is a deficient number, since it is larger than the sum of its proper divisors (10001016158).

12104020642 is a wasteful number, since it uses less digits than its factorization.

12104020642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548350.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12104020642 its reverse (24602040121), we get a palindrome (36706060763).

The spelling of 12104020642 in words is "twelve billion, one hundred four million, twenty thousand, six hundred forty-two".