42918405 has 16 divisors (see below), whose sum is σ = 71038080. Its totient is φ = 22100288.

The previous prime is 42918383. The next prime is 42918413. The reversal of 42918405 is 50481924.

It is a cyclic number.

It is not a de Polignac number, because 42918405 - 2⁹ = 42917893 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 48897 + ... + 49766.

It is an arithmetic number, because the mean of its divisors is an integer number (4439880).

Almost surely, 2^42918405 is an apocalyptic number.

It is an amenable number.

42918405 is a deficient number, since it is larger than the sum of its proper divisors (28119675).

42918405 is a wasteful number, since it uses less digits than its factorization.

42918405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98700.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 42918405 is about 6551.2140096321. The cubic root of 42918405 is about 350.1180690097.

The spelling of 42918405 in words is "forty-two million, nine hundred eighteen thousand, four hundred five".