42415990 has 8 divisors (see below), whose sum is σ = 76348800. Its totient is φ = 16966392.

The previous prime is 42415981. The next prime is 42416027. The reversal of 42415990 is 9951424.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

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, 2120790 + ... + 2120809.

It is an arithmetic number, because the mean of its divisors is an integer number (9543600).

Almost surely, 2^42415990 is an apocalyptic number.

42415990 is a deficient number, since it is larger than the sum of its proper divisors (33932810).

42415990 is a wasteful number, since it uses less digits than its factorization.

42415990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241606.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 42415990 is about 6512.7559450666. The cubic root of 42415990 is about 348.7465093025.

The spelling of 42415990 in words is "forty-two million, four hundred fifteen thousand, nine hundred ninety".