420525516 has 48 divisors (see below), whose sum is σ = 994832384. Its totient is φ = 138243456.

The previous prime is 420525467. The next prime is 420525517. The reversal of 420525516 is 615525024.

It is not an unprimeable number, because it can be changed into a prime (420525517) by changing a digit.

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, 386325 + ... + 387411.

Almost surely, 2^420525516 is an apocalyptic number.

It is an amenable number.

420525516 is an abundant number, since it is smaller than the sum of its proper divisors (574306868).

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

420525516 is a wasteful number, since it uses less digits than its factorization.

420525516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510 (or 1508 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 30.

The square root of 420525516 is about 20506.7188014075. The cubic root of 420525516 is about 749.1994515781.

The spelling of 420525516 in words is "four hundred twenty million, five hundred twenty-five thousand, five hundred sixteen".