91955042 has 4 divisors (see below), whose sum is σ = 137932566. Its totient is φ = 45977520.

The previous prime is 91955029. The next prime is 91955063. The reversal of 91955042 is 24055919.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24055919 = 19 ⋅1266101.

It can be written as a sum of positive squares in only one way, i.e., 82101721 + 9853321 = 9061^2 + 3139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91954993 and 91955011.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22988759 + ... + 22988762.

Almost surely, 2^91955042 is an apocalyptic number.

91955042 is a deficient number, since it is larger than the sum of its proper divisors (45977524).

91955042 is a wasteful number, since it uses less digits than its factorization.

91955042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45977523.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 91955042 is about 9589.3191624849. The cubic root of 91955042 is about 451.3621966088.

The spelling of 91955042 in words is "ninety-one million, nine hundred fifty-five thousand, forty-two".