20104025642 has 32 divisors (see below), whose sum is σ = 30598344000. Its totient is φ = 9906006528.

The previous prime is 20104025639. The next prime is 20104025663. The reversal of 20104025642 is 24652040102.

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, 34248473 + ... + 34249059.

It is an arithmetic number, because the mean of its divisors is an integer number (956198250).

Almost surely, 2^20104025642 is an apocalyptic number.

20104025642 is a deficient number, since it is larger than the sum of its proper divisors (10494318358).

20104025642 is a wasteful number, since it uses less digits than its factorization.

20104025642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430.

The product of its (nonzero) digits is 3840, while the sum is 26.

Adding to 20104025642 its reverse (24652040102), we get a palindrome (44756065744).

The spelling of 20104025642 in words is "twenty billion, one hundred four million, twenty-five thousand, six hundred forty-two".