421204000400 has 60 divisors (see below), whose sum is σ = 1065202767600. Its totient is φ = 159614144640.

The previous prime is 421204000369. The next prime is 421204000429. The reversal of 421204000400 is 4000402124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27703190 + ... + 27718389.

It is an arithmetic number, because the mean of its divisors is an integer number (17753379460).

Almost surely, 2^421204000400 is an apocalyptic number.

421204000400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421204000400 is an abundant number, since it is smaller than the sum of its proper divisors (643998767200).

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

421204000400 is a wasteful number, since it uses less digits than its factorization.

421204000400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55421616 (or 55421605 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 421204000400 its reverse (4000402124), we get a palindrome (425204402524).

The spelling of 421204000400 in words is "four hundred twenty-one billion, two hundred four million, four hundred", and thus it is an aban number.