420157564 has 12 divisors (see below), whose sum is σ = 773974600. Its totient is φ = 199021968.

The previous prime is 420157561. The next prime is 420157631. The reversal of 420157564 is 465751024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420157561) 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 3 ways as a sum of consecutive naturals, for example, 2764119 + ... + 2764270.

Almost surely, 2^420157564 is an apocalyptic number.

It is an amenable number.

420157564 is a deficient number, since it is larger than the sum of its proper divisors (353817036).

420157564 is a wasteful number, since it uses less digits than its factorization.

420157564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5528412 (or 5528410 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 420157564 is about 20497.7453394270. The cubic root of 420157564 is about 748.9808759570.

The spelling of 420157564 in words is "four hundred twenty million, one hundred fifty-seven thousand, five hundred sixty-four".