91712042 has 8 divisors (see below), whose sum is σ = 145660356. Its totient is φ = 43158592.

The previous prime is 91712009. The next prime is 91712051. The reversal of 91712042 is 24021719.

It can be written as a sum of positive squares in 2 ways, for example, as 91374481 + 337561 = 9559^2 + 581^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×91712042² = 16822197295619528, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348673 + ... + 1348740.

Almost surely, 2^91712042 is an apocalyptic number.

91712042 is a deficient number, since it is larger than the sum of its proper divisors (53948314).

91712042 is a wasteful number, since it uses less digits than its factorization.

91712042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697432.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 91712042 is about 9576.6404338891. The cubic root of 91712042 is about 450.9642566023.

The spelling of 91712042 in words is "ninety-one million, seven hundred twelve thousand, forty-two".