420516256 has 12 divisors (see below), whose sum is σ = 827891442. Its totient is φ = 210258112.

The previous prime is 420516247. The next prime is 420516259. The reversal of 420516256 is 652615024.

It can be written as a sum of positive squares in only one way, i.e., 420250000 + 266256 = 20500^2 + 516^2 .

It is not an unprimeable number, because it can be changed into a prime (420516259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6570535 + ... + 6570598.

Almost surely, 2^420516256 is an apocalyptic number.

It is an amenable number.

420516256 is a deficient number, since it is larger than the sum of its proper divisors (407375186).

420516256 is a wasteful number, since it uses less digits than its factorization.

420516256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13141143 (or 13141135 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 420516256 is about 20506.4930205045. The cubic root of 420516256 is about 749.1939523971.

The spelling of 420516256 in words is "four hundred twenty million, five hundred sixteen thousand, two hundred fifty-six".