42129212916 has 48 divisors (see below), whose sum is σ = 113926901760. Its totient is φ = 11867382240.

The previous prime is 42129212903. The next prime is 42129212921. The reversal of 42129212916 is 61921292124.

It is a super-2 number, since 2×42129212916² (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 15 ways as a sum of consecutive naturals, for example, 3525996 + ... + 3537923.

It is an arithmetic number, because the mean of its divisors is an integer number (2373477120).

Almost surely, 2^42129212916 is an apocalyptic number.

It is an amenable number.

42129212916 is an abundant number, since it is smaller than the sum of its proper divisors (71797688844).

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

42129212916 is a wasteful number, since it uses less digits than its factorization.

42129212916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7064004 (or 7064002 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The spelling of 42129212916 in words is "forty-two billion, one hundred twenty-nine million, two hundred twelve thousand, nine hundred sixteen".