42752578 has 24 divisors (see below), whose sum is σ = 71691696. Its totient is φ = 18963000.

The previous prime is 42752573. The next prime is 42752587. The reversal of 42752578 is 87525724.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 42752578.

It is not an unprimeable number, because it can be changed into a prime (42752573) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40153 + ... + 41203.

It is an arithmetic number, because the mean of its divisors is an integer number (2987154).

Almost surely, 2^42752578 is an apocalyptic number.

42752578 is a deficient number, since it is larger than the sum of its proper divisors (28939118).

42752578 is a wasteful number, since it uses less digits than its factorization.

42752578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150 (or 1107 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 42752578 is about 6538.5455569262. The cubic root of 42752578 is about 349.6665613515. Note that the first 3 decimals are identical.

The spelling of 42752578 in words is "forty-two million, seven hundred fifty-two thousand, five hundred seventy-eight".