420842167220 has 24 divisors (see below), whose sum is σ = 889621329408. Its totient is φ = 167222052000.

The previous prime is 420842167189. The next prime is 420842167297. The reversal of 420842167220 is 22761248024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69672836 + ... + 69678875.

It is an arithmetic number, because the mean of its divisors is an integer number (37067555392).

Almost surely, 2^420842167220 is an apocalyptic number.

It is an amenable number.

420842167220 is an abundant number, since it is smaller than the sum of its proper divisors (468779162188).

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

420842167220 is a wasteful number, since it uses less digits than its factorization.

420842167220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139351871 (or 139351869 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 38.

The spelling of 420842167220 in words is "four hundred twenty billion, eight hundred forty-two million, one hundred sixty-seven thousand, two hundred twenty".