420690488 has 16 divisors (see below), whose sum is σ = 792927360. Its totient is φ = 209243200.

The previous prime is 420690461. The next prime is 420690497. The reversal of 420690488 is 884096024.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 136133 + ... + 139188.

It is an arithmetic number, because the mean of its divisors is an integer number (49557960).

Almost surely, 2^420690488 is an apocalyptic number.

It is an amenable number.

420690488 is a deficient number, since it is larger than the sum of its proper divisors (372236872).

420690488 is a wasteful number, since it uses less digits than its factorization.

420690488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275518 (or 275514 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 41.

The square root of 420690488 is about 20510.7407959830. The cubic root of 420690488 is about 749.2974089897.

The spelling of 420690488 in words is "four hundred twenty million, six hundred ninety thousand, four hundred eighty-eight".