42115404 has 24 divisors (see below), whose sum is σ = 100555840. Its totient is φ = 13711824.

The previous prime is 42115399. The next prime is 42115417. The reversal of 42115404 is 40451124.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40294 + ... + 41325.

Almost surely, 2^42115404 is an apocalyptic number.

It is an amenable number.

42115404 is an abundant number, since it is smaller than the sum of its proper divisors (58440436).

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

42115404 is a wasteful number, since it uses less digits than its factorization.

42115404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81669 (or 81667 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 42115404 is about 6489.6382025503. The cubic root of 42115404 is about 347.9207442712.

Adding to 42115404 its reverse (40451124), we get a palindrome (82566528).

The spelling of 42115404 in words is "forty-two million, one hundred fifteen thousand, four hundred four".