420057192156 has 96 divisors (see below), whose sum is σ = 1159166077440. Its totient is φ = 115839085824.

The previous prime is 420057192143. The next prime is 420057192161. The reversal of 420057192156 is 651291750024.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7677810 + ... + 7732326.

It is an arithmetic number, because the mean of its divisors is an integer number (12074646640).

Almost surely, 2^420057192156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420057192156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (579583038720).

420057192156 is an abundant number, since it is smaller than the sum of its proper divisors (739108885284).

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

420057192156 is a wasteful number, since it uses less digits than its factorization.

420057192156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57723 (or 57721 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 42.

The spelling of 420057192156 in words is "four hundred twenty billion, fifty-seven million, one hundred ninety-two thousand, one hundred fifty-six".