421729927124 has 48 divisors (see below), whose sum is σ = 889545234816. Its totient is φ = 172574899200.

The previous prime is 421729927093. The next prime is 421729927139.

It is a happy number.

421729927124 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×421729927124² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12239537 + ... + 12273944.

It is an arithmetic number, because the mean of its divisors is an integer number (18532192392).

Almost surely, 2^421729927124 is an apocalyptic number.

421729927124 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

421729927124 is an abundant number, since it is smaller than the sum of its proper divisors (467815307692).

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

421729927124 is a wasteful number, since it uses less digits than its factorization.

421729927124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24513536 (or 24513534 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 50.

The spelling of 421729927124 in words is "four hundred twenty-one billion, seven hundred twenty-nine million, nine hundred twenty-seven thousand, one hundred twenty-four".