42494717 has 4 divisors (see below), whose sum is σ = 42552960. Its totient is φ = 42436476.

The previous prime is 42494701. The next prime is 42494723. The reversal of 42494717 is 71749424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42494717 - 2⁴ = 42494701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42494017) 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, 28013 + ... + 29490.

It is an arithmetic number, because the mean of its divisors is an integer number (10638240).

Almost surely, 2^42494717 is an apocalyptic number.

It is an amenable number.

42494717 is a deficient number, since it is larger than the sum of its proper divisors (58243).

42494717 is an equidigital number, since it uses as much as digits as its factorization.

42494717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58242.

The product of its digits is 56448, while the sum is 38.

The square root of 42494717 is about 6518.7972050065. The cubic root of 42494717 is about 348.9621417981.

The spelling of 42494717 in words is "forty-two million, four hundred ninety-four thousand, seven hundred seventeen".