42908660 has 12 divisors (see below), whose sum is σ = 90108228. Its totient is φ = 17163456.

The previous prime is 42908653. The next prime is 42908683. The reversal of 42908660 is 6680924.

It can be written as a sum of positive squares in 2 ways, for example, as 18028516 + 24880144 = 4246^2 + 4988^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42908660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1072697 + ... + 1072736.

It is an arithmetic number, because the mean of its divisors is an integer number (7509019).

Almost surely, 2^42908660 is an apocalyptic number.

It is an amenable number.

42908660 is an abundant number, since it is smaller than the sum of its proper divisors (47199568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42908660 is a wasteful number, since it uses less digits than its factorization.

42908660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2145442 (or 2145440 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 42908660 is about 6550.4702121298. The cubic root of 42908660 is about 350.0915678784.

The spelling of 42908660 in words is "forty-two million, nine hundred eight thousand, six hundred sixty".