420790232 has 16 divisors (see below), whose sum is σ = 816188400. Its totient is φ = 203140000.

The previous prime is 420790231. The next prime is 420790277. The reversal of 420790232 is 232097024.

It is a happy number.

It is a super-2 number, since 2×420790232² = 354128838693227648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a junction number, because it is equal to n+sod(n) for n = 420790195 and 420790204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420790231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906644 + ... + 907107.

It is an arithmetic number, because the mean of its divisors is an integer number (51011775).

Almost surely, 2^420790232 is an apocalyptic number.

It is an amenable number.

420790232 is a deficient number, since it is larger than the sum of its proper divisors (395398168).

420790232 is a wasteful number, since it uses less digits than its factorization.

420790232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813786 (or 1813782 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 420790232 is about 20513.1721583962. The cubic root of 420790232 is about 749.3566227640.

The spelling of 420790232 in words is "four hundred twenty million, seven hundred ninety thousand, two hundred thirty-two".