420312492 has 36 divisors (see below), whose sum is σ = 1064863800. Its totient is φ = 139786752.

The previous prime is 420312491. The next prime is 420312517. The reversal of 420312492 is 294213024.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (420312491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3163 + ... + 29165.

It is an arithmetic number, because the mean of its divisors is an integer number (29579550).

Almost surely, 2^420312492 is an apocalyptic number.

It is an amenable number.

420312492 is an abundant number, since it is smaller than the sum of its proper divisors (644551308).

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

420312492 is a wasteful number, since it uses less digits than its factorization.

420312492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26462 (or 26457 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 420312492 is about 20501.5241384635. The cubic root of 420312492 is about 749.0729238452.

The spelling of 420312492 in words is "four hundred twenty million, three hundred twelve thousand, four hundred ninety-two".