91542742 has 8 divisors (see below), whose sum is σ = 137385000. Its totient is φ = 45747744.

The previous prime is 91542719. The next prime is 91542757. The reversal of 91542742 is 24724519.

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

It is a super-2 number, since 2×91542742² = 16760147225757128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91542698 and 91542707.

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, 6492 + ... + 15007.

It is an arithmetic number, because the mean of its divisors is an integer number (17173125).

Almost surely, 2^91542742 is an apocalyptic number.

91542742 is a deficient number, since it is larger than the sum of its proper divisors (45842258).

91542742 is a wasteful number, since it uses less digits than its factorization.

91542742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23630.

The product of its digits is 20160, while the sum is 34.

The square root of 91542742 is about 9567.7971341370. The cubic root of 91542742 is about 450.6865930417.

The spelling of 91542742 in words is "ninety-one million, five hundred forty-two thousand, seven hundred forty-two".