42502751 has 8 divisors (see below), whose sum is σ = 44145360. Its totient is φ = 40886208.

The previous prime is 42502741. The next prime is 42502769. The reversal of 42502751 is 15720524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42502751 - 2⁶ = 42502687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42502751.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42502721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3161 + ... + 9746.

It is an arithmetic number, because the mean of its divisors is an integer number (5518170).

Almost surely, 2^42502751 is an apocalyptic number.

42502751 is a deficient number, since it is larger than the sum of its proper divisors (1642609).

42502751 is a wasteful number, since it uses less digits than its factorization.

42502751 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13033.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 42502751 is about 6519.4133938568. The cubic root of 42502751 is about 348.9841318664.

The spelling of 42502751 in words is "forty-two million, five hundred two thousand, seven hundred fifty-one".