917242071 has 4 divisors (see below), whose sum is σ = 1222989432. Its totient is φ = 611494712.

The previous prime is 917242069. The next prime is 917242121. The reversal of 917242071 is 170242719.

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

It is a cyclic number.

It is not a de Polignac number, because 917242071 - 2¹ = 917242069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (917242031) 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, 152873676 + ... + 152873681.

It is an arithmetic number, because the mean of its divisors is an integer number (305747358).

Almost surely, 2^917242071 is an apocalyptic number.

917242071 is a deficient number, since it is larger than the sum of its proper divisors (305747361).

917242071 is a wasteful number, since it uses less digits than its factorization.

917242071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305747360.

The product of its (nonzero) digits is 7056, while the sum is 33.

The square root of 917242071 is about 30286.0045400512. The cubic root of 917242071 is about 971.6159944363.

The spelling of 917242071 in words is "nine hundred seventeen million, two hundred forty-two thousand, seventy-one".