420664492 has 24 divisors (see below), whose sum is σ = 747950112. Its totient is φ = 206976000.

The previous prime is 420664487. The next prime is 420664511. The reversal of 420664492 is 294466024.

It is a super-2 number, since 2×420664492² = 353917229659236128, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 198028 + ... + 200140.

It is an arithmetic number, because the mean of its divisors is an integer number (31164588).

Almost surely, 2^420664492 is an apocalyptic number.

It is an amenable number.

420664492 is a deficient number, since it is larger than the sum of its proper divisors (327285620).

420664492 is a wasteful number, since it uses less digits than its factorization.

420664492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2889 (or 2887 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 37.

The square root of 420664492 is about 20510.1070694426. The cubic root of 420664492 is about 749.2819747316.

The spelling of 420664492 in words is "four hundred twenty million, six hundred sixty-four thousand, four hundred ninety-two".