204232402140021 has 56 divisors (see below), whose sum is σ = 314704873060704. Its totient is φ = 132382212040800.

The previous prime is 204232402140001. The next prime is 204232402140047. The reversal of 204232402140021 is 120041204232402.

It is a happy number.

204232402140021 is a `hidden beast` number, since 2 + 0 + 4 + 232 + 4 + 0 + 2 + 1 + 400 + 21 = 666.

It is not a de Polignac number, because 204232402140021 - 2²² = 204232397945717 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204232402140001) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 35837446 + ... + 41143496.

It is an arithmetic number, because the mean of its divisors is an integer number (5619729876084).

Almost surely, 2^{204232402140021} is an apocalyptic number.

It is an amenable number.

204232402140021 is a deficient number, since it is larger than the sum of its proper divisors (110472470920683).

204232402140021 is an equidigital number, since it uses as much as digits as its factorization.

204232402140021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5307533 (or 5307518 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 204232402140021 its reverse (120041204232402), we get a palindrome (324273606372423).

The spelling of 204232402140021 in words is "two hundred four trillion, two hundred thirty-two billion, four hundred two million, one hundred forty thousand, twenty-one".