421239776832 has 672 divisors, whose sum is σ = 1466085886720. Its totient is φ = 117438750720.

The previous prime is 421239776809. The next prime is 421239776879. The reversal of 421239776832 is 238677932124.

It is a happy number.

421239776832 is a `hidden beast` number, since 4 + 212 + 397 + 7 + 6 + 8 + 32 = 666.

It is a tau number, because it is divible by the number of its divisors (672).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1520721078 + ... + 1520721354.

Almost surely, 2^421239776832 is an apocalyptic number.

421239776832 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421239776832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (733042943360).

421239776832 is an abundant number, since it is smaller than the sum of its proper divisors (1044846109888).

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

421239776832 is a wasteful number, since it uses less digits than its factorization.

421239776832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 579 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 54.

The spelling of 421239776832 in words is "four hundred twenty-one billion, two hundred thirty-nine million, seven hundred seventy-six thousand, eight hundred thirty-two".