20000402420404 has 48 divisors (see below), whose sum is σ = 40549582499328. Its totient is φ = 8454010583808.

The previous prime is 20000402420371. The next prime is 20000402420407. The reversal of 20000402420404 is 40402420400002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000402420407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189951477 + ... + 190056739.

It is an arithmetic number, because the mean of its divisors is an integer number (844782968736).

Almost surely, 2^{20000402420404} is an apocalyptic number.

It is an amenable number.

20000402420404 is an abundant number, since it is smaller than the sum of its proper divisors (20549180078924).

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

20000402420404 is a wasteful number, since it uses less digits than its factorization.

20000402420404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198304 (or 198302 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 20000402420404 its reverse (40402420400002), we get a palindrome (60402822820406).

The spelling of 20000402420404 in words is "twenty trillion, four hundred two million, four hundred twenty thousand, four hundred four".