42908319 has 16 divisors (see below), whose sum is σ = 63669600. Its totient is φ = 28559808.

The previous prime is 42908303. The next prime is 42908329. The reversal of 42908319 is 91380924.

It is not a de Polignac number, because 42908319 - 2⁴ = 42908303 is a prime.

It is a super-2 number, since 2×42908319² = 3682247678811522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42908329) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29227 + ... + 30659.

It is an arithmetic number, because the mean of its divisors is an integer number (3979350).

Almost surely, 2^42908319 is an apocalyptic number.

42908319 is a deficient number, since it is larger than the sum of its proper divisors (20761281).

42908319 is a wasteful number, since it uses less digits than its factorization.

42908319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551 (or 2545 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 42908319 is about 6550.4441834123. Note that the first 3 decimals coincide. The cubic root of 42908319 is about 350.0906404701.

The spelling of 42908319 in words is "forty-two million, nine hundred eight thousand, three hundred nineteen".