91963042 has 4 divisors (see below), whose sum is σ = 137944566. Its totient is φ = 45981520.

The previous prime is 91963009. The next prime is 91963043. The reversal of 91963042 is 24036919.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24036919 = 19 ⋅1265101.

It can be written as a sum of positive squares in only one way, i.e., 53012961 + 38950081 = 7281^2 + 6241^2 .

It is a super-3 number, since 3×91963042³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91962989 and 91963007.

It is not an unprimeable number, because it can be changed into a prime (91963043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22990759 + ... + 22990762.

Almost surely, 2^91963042 is an apocalyptic number.

91963042 is a deficient number, since it is larger than the sum of its proper divisors (45981524).

91963042 is a wasteful number, since it uses less digits than its factorization.

91963042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45981523.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 91963042 is about 9589.7362841738. The cubic root of 91963042 is about 451.3752855879.

The spelling of 91963042 in words is "ninety-one million, nine hundred sixty-three thousand, forty-two".