420055542 has 24 divisors (see below), whose sum is σ = 913416816. Its totient is φ = 139511376.

The previous prime is 420055523. The next prime is 420055583. The reversal of 420055542 is 245550024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37138 + ... + 47109.

It is an arithmetic number, because the mean of its divisors is an integer number (38059034).

Almost surely, 2^420055542 is an apocalyptic number.

420055542 is an abundant number, since it is smaller than the sum of its proper divisors (493361274).

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

420055542 is a wasteful number, since it uses less digits than its factorization.

420055542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84532 (or 84529 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 420055542 is about 20495.2565731683. The cubic root of 420055542 is about 748.9202489295.

The spelling of 420055542 in words is "four hundred twenty million, fifty-five thousand, five hundred forty-two".