423129884220 has 72 divisors (see below), whose sum is σ = 1283612357664. Its totient is φ = 112824229248.

The previous prime is 423129884209. The next prime is 423129884249. The reversal of 423129884220 is 22488921324.

423129884220 is a `hidden beast` number, since 4 + 23 + 129 + 88 + 422 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1957782 + ... + 2163138.

It is an arithmetic number, because the mean of its divisors is an integer number (17827949412).

Almost surely, 2^423129884220 is an apocalyptic number.

It is an amenable number.

423129884220 is an abundant number, since it is smaller than the sum of its proper divisors (860482473444).

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

423129884220 is a wasteful number, since it uses less digits than its factorization.

423129884220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216819 (or 216814 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 423129884220 in words is "four hundred twenty-three billion, one hundred twenty-nine million, eight hundred eighty-four thousand, two hundred twenty".