89542 has 4 divisors (see below), whose sum is σ = 134316. Its totient is φ = 44770.

The previous prime is 89533. The next prime is 89561. The reversal of 89542 is 24598.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 89542.

It is a congruent number.

It is an unprimeable number.

89542 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22384 + ... + 22387.

It is an arithmetic number, because the mean of its divisors is an integer number (33579).

2⁸⁹⁵⁴² is an apocalyptic number.

89542 is a deficient number, since it is larger than the sum of its proper divisors (44774).

89542 is a wasteful number, since it uses less digits than its factorization.

89542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44773.

The product of its digits is 2880, while the sum is 28.

The square root of 89542 is about 299.2356930582. The cubic root of 89542 is about 44.7379002481.

The spelling of 89542 in words is "eighty-nine thousand, five hundred forty-two".