42415415 has 16 divisors (see below), whose sum is σ = 59524608. Its totient is φ = 28407456.

The previous prime is 42415397. The next prime is 42415441. The reversal of 42415415 is 51451424.

42415415 = 74² + 75² + ... + 503².

It is not a de Polignac number, because 42415415 - 2²⁰ = 41366839 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 12587 + ... + 15596.

It is an arithmetic number, because the mean of its divisors is an integer number (3720288).

Almost surely, 2^42415415 is an apocalyptic number.

42415415 is a deficient number, since it is larger than the sum of its proper divisors (17109193).

42415415 is a wasteful number, since it uses less digits than its factorization.

42415415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28238.

The product of its digits is 3200, while the sum is 26.

The square root of 42415415 is about 6512.7118007785. The cubic root of 42415415 is about 348.7449334019.

Adding to 42415415 its reverse (51451424), we get a palindrome (93866839).

The spelling of 42415415 in words is "forty-two million, four hundred fifteen thousand, four hundred fifteen".