42169128 has 32 divisors (see below), whose sum is σ = 106414560. Its totient is φ = 13924160.

The previous prime is 42169093. The next prime is 42169133. The reversal of 42169128 is 82196124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5643 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (3325455).

Almost surely, 2^42169128 is an apocalyptic number.

It is an amenable number.

42169128 is an abundant number, since it is smaller than the sum of its proper divisors (64245432).

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

42169128 is a wasteful number, since it uses less digits than its factorization.

42169128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16537 (or 16533 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 42169128 is about 6493.7760971564. The cubic root of 42169128 is about 348.0686216903.

The spelling of 42169128 in words is "forty-two million, one hundred sixty-nine thousand, one hundred twenty-eight".