42115938 has 16 divisors (see below), whose sum is σ = 86286816. Its totient is φ = 13696160.

The previous prime is 42115937. The next prime is 42115939. The reversal of 42115938 is 83951124.

It is an interprime number because it is at equal distance from previous prime (42115937) and next prime (42115939).

It is a junction number, because it is equal to n+sod(n) for n = 42115899 and 42115908.

It is not an unprimeable number, because it can be changed into a prime (42115933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85356 + ... + 85847.

It is an arithmetic number, because the mean of its divisors is an integer number (5392926).

Almost surely, 2^42115938 is an apocalyptic number.

42115938 is an abundant number, since it is smaller than the sum of its proper divisors (44170878).

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

42115938 is a wasteful number, since it uses less digits than its factorization.

42115938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171249.

The product of its digits is 8640, while the sum is 33.

The square root of 42115938 is about 6489.6793449291. The cubic root of 42115938 is about 347.9222147457.

The spelling of 42115938 in words is "forty-two million, one hundred fifteen thousand, nine hundred thirty-eight".