420780516 has 48 divisors (see below), whose sum is σ = 1059820608. Its totient is φ = 129168000.

The previous prime is 420780509. The next prime is 420780527. The reversal of 420780516 is 615087024.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68991 + ... + 74841.

It is an arithmetic number, because the mean of its divisors is an integer number (22079596).

Almost surely, 2^420780516 is an apocalyptic number.

It is an amenable number.

420780516 is an abundant number, since it is smaller than the sum of its proper divisors (639040092).

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

420780516 is a wasteful number, since it uses less digits than its factorization.

420780516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6332 (or 6330 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 420780516 is about 20512.9353335889. The cubic root of 420780516 is about 749.3508551990.

The spelling of 420780516 in words is "four hundred twenty million, seven hundred eighty thousand, five hundred sixteen".