42147138 has 32 divisors (see below), whose sum is σ = 94102272. Its totient is φ = 12474000.

The previous prime is 42147113. The next prime is 42147191. The reversal of 42147138 is 83174124.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4588 + ... + 10263.

It is an arithmetic number, because the mean of its divisors is an integer number (2940696).

Almost surely, 2^42147138 is an apocalyptic number.

42147138 is an abundant number, since it is smaller than the sum of its proper divisors (51955134).

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

42147138 is a wasteful number, since it uses less digits than its factorization.

42147138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14910.

The product of its digits is 5376, while the sum is 30.

The square root of 42147138 is about 6492.0827166634. The cubic root of 42147138 is about 348.0081085441.

The spelling of 42147138 in words is "forty-two million, one hundred forty-seven thousand, one hundred thirty-eight".