42816501 has 48 divisors (see below), whose sum is σ = 79462656. Its totient is φ = 21593088.

The previous prime is 42816497. The next prime is 42816509. The reversal of 42816501 is 10561824.

42816501 is a `hidden beast` number, since 4 + 2 + 8 + 1 + 650 + 1 = 666.

It is not a de Polignac number, because 42816501 - 2² = 42816497 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42816509) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17701 + ... + 19973.

It is an arithmetic number, because the mean of its divisors is an integer number (1655472).

Almost surely, 2^42816501 is an apocalyptic number.

It is an amenable number.

42816501 is a deficient number, since it is larger than the sum of its proper divisors (36646155).

42816501 is a wasteful number, since it uses less digits than its factorization.

42816501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2322 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 42816501 is about 6543.4318977124. The cubic root of 42816501 is about 349.8407465968.

The spelling of 42816501 in words is "forty-two million, eight hundred sixteen thousand, five hundred one".