91240142 has 16 divisors (see below), whose sum is σ = 156549120. Its totient is φ = 39068568.

The previous prime is 91240141. The next prime is 91240159. The reversal of 91240142 is 24104219.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91240141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19859 + ... + 24017.

It is an arithmetic number, because the mean of its divisors is an integer number (9784320).

Almost surely, 2^91240142 is an apocalyptic number.

91240142 is a deficient number, since it is larger than the sum of its proper divisors (65308978).

91240142 is a wasteful number, since it uses less digits than its factorization.

91240142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5735.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 91240142 is about 9551.9705820318. The cubic root of 91240142 is about 450.1894543830.

The spelling of 91240142 in words is "ninety-one million, two hundred forty thousand, one hundred forty-two".