42318415 has 16 divisors (see below), whose sum is σ = 53665920. Its totient is φ = 31946400.

The previous prime is 42318383. The next prime is 42318431. The reversal of 42318415 is 51481324.

It is not a de Polignac number, because 42318415 - 2⁵ = 42318383 is a prime.

It is a super-2 number, since 2×42318415² = 3581696496224450, which contains 22 as substring.

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, 28440 + ... + 29890.

It is an arithmetic number, because the mean of its divisors is an integer number (3354120).

Almost surely, 2^42318415 is an apocalyptic number.

42318415 is a deficient number, since it is larger than the sum of its proper divisors (11347505).

42318415 is a wasteful number, since it uses less digits than its factorization.

42318415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1782.

The product of its digits is 3840, while the sum is 28.

The square root of 42318415 is about 6505.2605635747. The cubic root of 42318415 is about 348.4788817107.

Adding to 42318415 its reverse (51481324), we get a palindrome (93799739).

The spelling of 42318415 in words is "forty-two million, three hundred eighteen thousand, four hundred fifteen".