42417915 has 16 divisors (see below), whose sum is σ = 68011008. Its totient is φ = 22575456.

The previous prime is 42417887. The next prime is 42417919. The reversal of 42417915 is 51971424.

It is a happy number.

It is not a de Polignac number, because 42417915 - 2⁷ = 42417787 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42417919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5142 + ... + 10548.

It is an arithmetic number, because the mean of its divisors is an integer number (4250688).

Almost surely, 2^42417915 is an apocalyptic number.

42417915 is a deficient number, since it is larger than the sum of its proper divisors (25593093).

42417915 is a wasteful number, since it uses less digits than its factorization.

42417915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5938.

The product of its digits is 10080, while the sum is 33.

The square root of 42417915 is about 6512.9037302881. The cubic root of 42417915 is about 348.7517850399.

The spelling of 42417915 in words is "forty-two million, four hundred seventeen thousand, nine hundred fifteen".