42185657152 has 28 divisors (see below), whose sum is σ = 85974659140. Its totient is φ = 20522750976.

The previous prime is 42185657141. The next prime is 42185657159. The reversal of 42185657152 is 25175658124.

It can be written as a sum of positive squares in 2 ways, for example, as 25633290816 + 16552366336 = 160104^2 + 128656^2 .

It is a super-2 number, since 2×42185657152² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42185657159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8905077 + ... + 8909812.

Almost surely, 2^42185657152 is an apocalyptic number.

It is an amenable number.

42185657152 is an abundant number, since it is smaller than the sum of its proper divisors (43789001988).

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

42185657152 is a wasteful number, since it uses less digits than its factorization.

42185657152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17814938 (or 17814928 counting only the distinct ones).

The product of its digits is 672000, while the sum is 46.

The spelling of 42185657152 in words is "forty-two billion, one hundred eighty-five million, six hundred fifty-seven thousand, one hundred fifty-two".