42128865012832 has 36 divisors (see below), whose sum is σ = 89812071892620. Its totient is φ = 19444091541888.

The previous prime is 42128865012809. The next prime is 42128865012869. The reversal of 42128865012832 is 23821056882124.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 42128865012832.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3895044982 + ... + 3895055797.

It is an arithmetic number, because the mean of its divisors is an integer number (2494779774795).

Almost surely, 2^{42128865012832} is an apocalyptic number.

It is an amenable number.

42128865012832 is an abundant number, since it is smaller than the sum of its proper divisors (47683206879788).

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

42128865012832 is a wasteful number, since it uses less digits than its factorization.

42128865012832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7790100815 (or 7790100794 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 42128865012832 in words is "forty-two trillion, one hundred twenty-eight billion, eight hundred sixty-five million, twelve thousand, eight hundred thirty-two".