421004400124 has 48 divisors (see below), whose sum is σ = 919819031040. Its totient is φ = 163801978560.

The previous prime is 421004400077. The next prime is 421004400209.

421004400124 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 421004400095 and 421004400104.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 716179 + ... + 1164010.

It is an arithmetic number, because the mean of its divisors is an integer number (19162896480).

Almost surely, 2^421004400124 is an apocalyptic number.

421004400124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421004400124 is an abundant number, since it is smaller than the sum of its proper divisors (498814630916).

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

421004400124 is a wasteful number, since it uses less digits than its factorization.

421004400124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880938 (or 1880936 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

It can be divided in two parts, 421004 and 400124, that added together give a palindrome (821128).

The spelling of 421004400124 in words is "four hundred twenty-one billion, four million, four hundred thousand, one hundred twenty-four".