42905168 has 10 divisors (see below), whose sum is σ = 83128794. Its totient is φ = 21452576.

The previous prime is 42905141. The next prime is 42905171. The reversal of 42905168 is 86150924.

It can be written as a sum of positive squares in only one way, i.e., 42667024 + 238144 = 6532^2 + 488^2 .

It is a super-2 number, since 2×42905168² = 3681706882216448, 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 as a sum of consecutive naturals, namely, 1340771 + ... + 1340802.

Almost surely, 2^42905168 is an apocalyptic number.

It is an amenable number.

42905168 is a deficient number, since it is larger than the sum of its proper divisors (40223626).

42905168 is a wasteful number, since it uses less digits than its factorization.

42905168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2681581 (or 2681575 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 42905168 is about 6550.2036609559. The cubic root of 42905168 is about 350.0820705499.

The spelling of 42905168 in words is "forty-two million, nine hundred five thousand, one hundred sixty-eight".