91742132 has 12 divisors (see below), whose sum is σ = 169992900. Its totient is φ = 43172736.

The previous prime is 91742117. The next prime is 91742137. The reversal of 91742132 is 23124719.

It can be written as a sum of positive squares in 2 ways, for example, as 69122596 + 22619536 = 8314^2 + 4756^2 .

It is a junction number, because it is equal to n+sod(n) for n = 91742095 and 91742104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91742137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674507 + ... + 674642.

It is an arithmetic number, because the mean of its divisors is an integer number (14166075).

Almost surely, 2^91742132 is an apocalyptic number.

It is an amenable number.

91742132 is a deficient number, since it is larger than the sum of its proper divisors (78250768).

91742132 is a wasteful number, since it uses less digits than its factorization.

91742132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349170 (or 1349168 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 91742132 is about 9578.2113152718. The cubic root of 91742132 is about 451.0135704853.

The spelling of 91742132 in words is "ninety-one million, seven hundred forty-two thousand, one hundred thirty-two".