91084542 has 16 divisors (see below), whose sum is σ = 183841680. Its totient is φ = 30082752.

The previous prime is 91084519. The next prime is 91084547. The reversal of 91084542 is 24548019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91084547) 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 7 ways as a sum of consecutive naturals, for example, 68983 + ... + 70290.

It is an arithmetic number, because the mean of its divisors is an integer number (11490105).

Almost surely, 2^91084542 is an apocalyptic number.

91084542 is an abundant number, since it is smaller than the sum of its proper divisors (92757138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91084542 is a wasteful number, since it uses less digits than its factorization.

91084542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139387.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 91084542 is about 9543.8221902967. The cubic root of 91084542 is about 449.9333926106.

The spelling of 91084542 in words is "ninety-one million, eighty-four thousand, five hundred forty-two".