42917491 has 8 divisors (see below), whose sum is σ = 43752960. Its totient is φ = 42090048.

The previous prime is 42917467. The next prime is 42917507. The reversal of 42917491 is 19471924.

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 42917491 - 2²³ = 34528883 is a prime.

It is a super-2 number, since 2×42917491² = 3683822067470162, which contains 22 as substring.

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 42917491.

It is not an unprimeable number, because it can be changed into a prime (42917591) 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, 9405 + ... + 13201.

It is an arithmetic number, because the mean of its divisors is an integer number (5469120).

Almost surely, 2^42917491 is an apocalyptic number.

42917491 is a deficient number, since it is larger than the sum of its proper divisors (835469).

42917491 is a wasteful number, since it uses less digits than its factorization.

42917491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013.

The product of its digits is 18144, while the sum is 37.

The square root of 42917491 is about 6551.1442511976. The cubic root of 42917491 is about 350.1155835943.

The spelling of 42917491 in words is "forty-two million, nine hundred seventeen thousand, four hundred ninety-one".