420343655028 has 24 divisors (see below), whose sum is σ = 1069965667680. Its totient is φ = 127376865120.

The previous prime is 420343654981. The next prime is 420343655041. The reversal of 420343655028 is 820556343024.

It is a happy number.

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, 1592210683 + ... + 1592210946.

It is an arithmetic number, because the mean of its divisors is an integer number (44581902820).

Almost surely, 2^420343655028 is an apocalyptic number.

It is an amenable number.

420343655028 is an abundant number, since it is smaller than the sum of its proper divisors (649622012652).

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

420343655028 is a wasteful number, since it uses less digits than its factorization.

420343655028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3184421647 (or 3184421645 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 42.

The spelling of 420343655028 in words is "four hundred twenty billion, three hundred forty-three million, six hundred fifty-five thousand, twenty-eight".