42424621564 has 12 divisors (see below), whose sum is σ = 79954094584. Its totient is φ = 19580594544.

The previous prime is 42424621559. The next prime is 42424621571. The reversal of 42424621564 is 46512642424.

It is a super-2 number, since 2×42424621564² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 407929002 + ... + 407929105.

Almost surely, 2^42424621564 is an apocalyptic number.

It is an amenable number.

42424621564 is a deficient number, since it is larger than the sum of its proper divisors (37529473020).

42424621564 is a wasteful number, since it uses less digits than its factorization.

42424621564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815858124 (or 815858122 counting only the distinct ones).

The product of its digits is 368640, while the sum is 40.

The spelling of 42424621564 in words is "forty-two billion, four hundred twenty-four million, six hundred twenty-one thousand, five hundred sixty-four".