42519968 has 12 divisors (see below), whose sum is σ = 83711250. Its totient is φ = 21259968.

The previous prime is 42519959. The next prime is 42520021. The reversal of 42519968 is 86991524.

It can be written as a sum of positive squares in only one way, i.e., 39790864 + 2729104 = 6308^2 + 1652^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 664343 + ... + 664406.

Almost surely, 2^42519968 is an apocalyptic number.

It is an amenable number.

42519968 is a deficient number, since it is larger than the sum of its proper divisors (41191282).

42519968 is a wasteful number, since it uses less digits than its factorization.

42519968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328759 (or 1328751 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 42519968 is about 6520.7337010493. The cubic root of 42519968 is about 349.0312476298.

The spelling of 42519968 in words is "forty-two million, five hundred nineteen thousand, nine hundred sixty-eight".