42729188 has 12 divisors (see below), whose sum is σ = 75131952. Its totient is φ = 21262920.

The previous prime is 42729139. The next prime is 42729217. The reversal of 42729188 is 88192724.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24470 + ... + 26157.

It is an arithmetic number, because the mean of its divisors is an integer number (6260996).

Almost surely, 2^42729188 is an apocalyptic number.

It is an amenable number.

42729188 is a deficient number, since it is larger than the sum of its proper divisors (32402764).

42729188 is a wasteful number, since it uses less digits than its factorization.

42729188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50842 (or 50840 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 42729188 is about 6536.7566881444. The cubic root of 42729188 is about 349.6027820175.

The spelling of 42729188 in words is "forty-two million, seven hundred twenty-nine thousand, one hundred eighty-eight".