42618394 has 16 divisors (see below), whose sum is σ = 78680448. Its totient is φ = 16859952.

The previous prime is 42618353. The next prime is 42618419. The reversal of 42618394 is 49381624.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116902 + ... + 117265.

It is an arithmetic number, because the mean of its divisors is an integer number (4917528).

Almost surely, 2^42618394 is an apocalyptic number.

42618394 is a deficient number, since it is larger than the sum of its proper divisors (36062054).

42618394 is a wasteful number, since it uses less digits than its factorization.

42618394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234189.

The product of its digits is 41472, while the sum is 37.

The square root of 42618394 is about 6528.2764953700. The cubic root of 42618394 is about 349.3003547314.

The spelling of 42618394 in words is "forty-two million, six hundred eighteen thousand, three hundred ninety-four".