90142 has 8 divisors (see below), whose sum is σ = 145656. Its totient is φ = 41592.

The previous prime is 90127. The next prime is 90149. The reversal of 90142 is 24109.

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 (90149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1708 + ... + 1759.

It is an arithmetic number, because the mean of its divisors is an integer number (18207).

2⁹⁰¹⁴² is an apocalyptic number.

90142 is a deficient number, since it is larger than the sum of its proper divisors (55514).

90142 is a wasteful number, since it uses less digits than its factorization.

90142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3482.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 90142 is about 300.2365733884. The cubic root of 90142 is about 44.8376039504.

It can be divided in two parts, 90 and 142, that added together give a palindrome (232).

The spelling of 90142 in words is "ninety thousand, one hundred forty-two".