20040420204 has 36 divisors (see below), whose sum is σ = 57894547984. Its totient is φ = 5725834272.

The previous prime is 20040420203. The next prime is 20040420209. The reversal of 20040420204 is 40202404002.

20040420204 is a `hidden beast` number, since 2 + 0 + 0 + 40 + 420 + 204 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20040420203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39762487 + ... + 39762990.

Almost surely, 2^20040420204 is an apocalyptic number.

It is an amenable number.

20040420204 is an abundant number, since it is smaller than the sum of its proper divisors (37854127780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20040420204 is a wasteful number, since it uses less digits than its factorization.

20040420204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79525494 (or 79525489 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20040420204 its reverse (40202404002), we get a palindrome (60242824206).

The spelling of 20040420204 in words is "twenty billion, forty million, four hundred twenty thousand, two hundred four".