420017030056 has 64 divisors (see below), whose sum is σ = 886043869200. Its totient is φ = 185316096000.

The previous prime is 420017030039. The next prime is 420017030113. The reversal of 420017030056 is 650030710024.

It can be written as a sum of positive squares in 8 ways, for example, as 204132276100 + 215884753956 = 451810^2 + 464634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 384805 + ... + 994036.

Almost surely, 2^420017030056 is an apocalyptic number.

It is an amenable number.

420017030056 is an abundant number, since it is smaller than the sum of its proper divisors (466026839144).

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

420017030056 is a wasteful number, since it uses less digits than its factorization.

420017030056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378990 (or 1378986 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 420017030056 in words is "four hundred twenty billion, seventeen million, thirty thousand, fifty-six".