90542 has 8 divisors (see below), whose sum is σ = 143856. Its totient is φ = 42592.

The previous prime is 90533. The next prime is 90547. The reversal of 90542 is 24509.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1298 + ... + 1365.

It is an arithmetic number, because the mean of its divisors is an integer number (17982).

2⁹⁰⁵⁴² is an apocalyptic number.

90542 is a deficient number, since it is larger than the sum of its proper divisors (53314).

90542 is a wasteful number, since it uses less digits than its factorization.

90542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2682.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 90542 is about 300.9019773946. The cubic root of 90542 is about 44.9038275317.

The spelling of 90542 in words is "ninety thousand, five hundred forty-two".