420423516 has 18 divisors (see below), whose sum is σ = 1062737312. Its totient is φ = 140141160.

The previous prime is 420423503. The next prime is 420423533. The reversal of 420423516 is 615324024.

420423516 is a `hidden beast` number, since 420 + 4 + 235 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 420423516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5839180 + ... + 5839251.

Almost surely, 2^420423516 is an apocalyptic number.

It is an amenable number.

420423516 is an abundant number, since it is smaller than the sum of its proper divisors (642313796).

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

420423516 is a wasteful number, since it uses less digits than its factorization.

420423516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11678441 (or 11678436 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 420423516 is about 20504.2316608060. The cubic root of 420423516 is about 749.1388729921.

The spelling of 420423516 in words is "four hundred twenty million, four hundred twenty-three thousand, five hundred sixteen".