91042 has 12 divisors (see below), whose sum is σ = 159030. Its totient is φ = 38976.

The previous prime is 91033. The next prime is 91079. The reversal of 91042 is 24019.

It can be written as a sum of positive squares in only one way, i.e., 90601 + 441 = 301^2 + 21^2 .

It is a congruent number.

It is an unprimeable number.

91042 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 367 + ... + 562.

2⁹¹⁰⁴² is an apocalyptic number.

91042 is a deficient number, since it is larger than the sum of its proper divisors (67988).

91042 is a wasteful number, since it uses less digits than its factorization.

91042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 938 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 91042 is about 301.7316688715. The cubic root of 91042 is about 44.9863332983.

The spelling of 91042 in words is "ninety-one thousand, forty-two".