420597085640 has 32 divisors (see below), whose sum is σ = 953251071480. Its totient is φ = 167010811392.

The previous prime is 420597085633. The next prime is 420597085673. The reversal of 420597085640 is 46580795024.

It can be written as a sum of positive squares in 4 ways, for example, as 351509065924 + 69088019716 = 592882^2 + 262846^2 .

It is a super-2 number, since 2×420597085640² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38370167 + ... + 38381126.

Almost surely, 2^420597085640 is an apocalyptic number.

420597085640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420597085640 is an abundant number, since it is smaller than the sum of its proper divisors (532653985840).

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

420597085640 is a wasteful number, since it uses less digits than its factorization.

420597085640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76751441 (or 76751437 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 420597085640 in words is "four hundred twenty billion, five hundred ninety-seven million, eighty-five thousand, six hundred forty".