91656142 has 8 divisors (see below), whose sum is σ = 138074976. Its totient is φ = 45631152.

The previous prime is 91656137. The next prime is 91656143. The reversal of 91656142 is 24165619.

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

It is a junction number, because it is equal to n+sod(n) for n = 91656098 and 91656107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91656143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97878 + ... + 98809.

It is an arithmetic number, because the mean of its divisors is an integer number (17259372).

Almost surely, 2^91656142 is an apocalyptic number.

91656142 is a deficient number, since it is larger than the sum of its proper divisors (46418834).

91656142 is a wasteful number, since it uses less digits than its factorization.

91656142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196922.

The product of its digits is 12960, while the sum is 34.

The square root of 91656142 is about 9573.7214289951. The cubic root of 91656142 is about 450.8726146002.

The spelling of 91656142 in words is "ninety-one million, six hundred fifty-six thousand, one hundred forty-two".