42517793 has 4 divisors (see below), whose sum is σ = 43214868. Its totient is φ = 41820720.

The previous prime is 42517789. The next prime is 42517807. The reversal of 42517793 is 39771524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16589329 + 25928464 = 4073^2 + 5092^2 .

It is a cyclic number.

It is not a de Polignac number, because 42517793 - 2² = 42517789 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42517723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348446 + ... + 348567.

It is an arithmetic number, because the mean of its divisors is an integer number (10803717).

Almost surely, 2^42517793 is an apocalyptic number.

It is an amenable number.

42517793 is a deficient number, since it is larger than the sum of its proper divisors (697075).

42517793 is an equidigital number, since it uses as much as digits as its factorization.

42517793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 697074.

The product of its digits is 52920, while the sum is 38.

The square root of 42517793 is about 6520.5669232054. The cubic root of 42517793 is about 349.0252962620.

The spelling of 42517793 in words is "forty-two million, five hundred seventeen thousand, seven hundred ninety-three".