80542 has 16 divisors (see below), whose sum is σ = 150912. Its totient is φ = 31320.

The previous prime is 80537. The next prime is 80557. The reversal of 80542 is 24508.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108 + ... + 415.

It is an arithmetic number, because the mean of its divisors is an integer number (9432).

2⁸⁰⁵⁴² is an apocalyptic number.

80542 is a deficient number, since it is larger than the sum of its proper divisors (70370).

80542 is a wasteful number, since it uses less digits than its factorization.

80542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 80542 is about 283.7992248051. The cubic root of 80542 is about 43.1857835022.

The spelling of 80542 in words is "eighty thousand, five hundred forty-two".