42392517 has 16 divisors (see below), whose sum is σ = 57309120. Its totient is φ = 27872000.

The previous prime is 42392507. The next prime is 42392521. The reversal of 42392517 is 71529324.

It is a cyclic number.

It is not a de Polignac number, because 42392517 - 2⁴ = 42392501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42392507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105517 + ... + 105917.

It is an arithmetic number, because the mean of its divisors is an integer number (3581820).

Almost surely, 2^42392517 is an apocalyptic number.

It is an amenable number.

42392517 is a deficient number, since it is larger than the sum of its proper divisors (14916603).

42392517 is a wasteful number, since it uses less digits than its factorization.

42392517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its digits is 15120, while the sum is 33.

The square root of 42392517 is about 6510.9536167907. The cubic root of 42392517 is about 348.6821653499.

The spelling of 42392517 in words is "forty-two million, three hundred ninety-two thousand, five hundred seventeen".