420661912 has 32 divisors (see below), whose sum is σ = 873299520. Its totient is φ = 188353440.

The previous prime is 420661903. The next prime is 420661933. The reversal of 420661912 is 219166024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29778 + ... + 41569.

It is an arithmetic number, because the mean of its divisors is an integer number (27290610).

Almost surely, 2^420661912 is an apocalyptic number.

It is an amenable number.

420661912 is an abundant number, since it is smaller than the sum of its proper divisors (452637608).

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

420661912 is a wasteful number, since it uses less digits than its factorization.

420661912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71431 (or 71427 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 420661912 is about 20510.0441735263. The cubic root of 420661912 is about 749.2804429079.

The spelling of 420661912 in words is "four hundred twenty million, six hundred sixty-one thousand, nine hundred twelve".