91207942 has 32 divisors (see below), whose sum is σ = 166233600. Its totient is φ = 36661248.

The previous prime is 91207937. The next prime is 91207951. The reversal of 91207942 is 24970219.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 91207898 and 91207907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25734 + ... + 29062.

It is an arithmetic number, because the mean of its divisors is an integer number (5194800).

Almost surely, 2^91207942 is an apocalyptic number.

91207942 is a deficient number, since it is larger than the sum of its proper divisors (75025658).

91207942 is a wasteful number, since it uses less digits than its factorization.

91207942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3460.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 91207942 is about 9550.2849172158. The cubic root of 91207942 is about 450.1364886389.

The spelling of 91207942 in words is "ninety-one million, two hundred seven thousand, nine hundred forty-two".