420564130642 has 32 divisors (see below), whose sum is σ = 638187303600. Its totient is φ = 207850536960.

The previous prime is 420564130627. The next prime is 420564130667. The reversal of 420564130642 is 246031465024.

It can be written as a sum of positive squares in 8 ways, for example, as 343995153121 + 76568977521 = 586511^2 + 276711^2 .

It is a super-2 number, since 2×420564130642² (a number of 24 digits) contains 22 as substring.

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, 101168028 + ... + 101172184.

Almost surely, 2^420564130642 is an apocalyptic number.

420564130642 is a deficient number, since it is larger than the sum of its proper divisors (217623172958).

420564130642 is a wasteful number, since it uses less digits than its factorization.

420564130642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5886.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 420564130642 its reverse (246031465024), we get a palindrome (666595595666).

The spelling of 420564130642 in words is "four hundred twenty billion, five hundred sixty-four million, one hundred thirty thousand, six hundred forty-two".