42593918 has 8 divisors (see below), whose sum is σ = 64488312. Its totient is φ = 21097816.

The previous prime is 42593911. The next prime is 42593923. The reversal of 42593918 is 81939524.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42593911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99305 + ... + 99732.

It is an arithmetic number, because the mean of its divisors is an integer number (8061039).

Almost surely, 2^42593918 is an apocalyptic number.

42593918 is a deficient number, since it is larger than the sum of its proper divisors (21894394).

42593918 is a wasteful number, since it uses less digits than its factorization.

42593918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199146.

The product of its digits is 77760, while the sum is 41.

The square root of 42593918 is about 6526.4016119145. The cubic root of 42593918 is about 349.2334734948.

The spelling of 42593918 in words is "forty-two million, five hundred ninety-three thousand, nine hundred eighteen".