91142902 has 8 divisors (see below), whose sum is σ = 136932912. Its totient is φ = 45498600.

The previous prime is 91142897. The next prime is 91142941. The reversal of 91142902 is 20924119.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34849 + ... + 37372.

It is an arithmetic number, because the mean of its divisors is an integer number (17116614).

Almost surely, 2^91142902 is an apocalyptic number.

91142902 is a deficient number, since it is larger than the sum of its proper divisors (45790010).

91142902 is a wasteful number, since it uses less digits than its factorization.

91142902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72854.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 91142902 is about 9546.8791759402. The cubic root of 91142902 is about 450.0294663832.

The spelling of 91142902 in words is "ninety-one million, one hundred forty-two thousand, nine hundred two".