420275232 has 72 divisors (see below), whose sum is σ = 1287104364. Its totient is φ = 129314304.

The previous prime is 420275209. The next prime is 420275237. The reversal of 420275232 is 232572024.

420275232 is a `hidden beast` number, since 420 + 2 + 7 + 5 + 232 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 358117776 + 62157456 = 18924^2 + 7884^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 420275196 and 420275205.

It is not an unprimeable number, because it can be changed into a prime (420275237) 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, 52383 + ... + 59870.

Almost surely, 2^420275232 is an apocalyptic number.

It is an amenable number.

420275232 is an abundant number, since it is smaller than the sum of its proper divisors (866829132).

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

420275232 is a wasteful number, since it uses less digits than its factorization.

420275232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112282 (or 112271 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 420275232 is about 20500.6154053970. The cubic root of 420275232 is about 749.0507885035.

The spelling of 420275232 in words is "four hundred twenty million, two hundred seventy-five thousand, two hundred thirty-two".