78542 has 8 divisors (see below), whose sum is σ = 119016. Its totient is φ = 38872.

The previous prime is 78541. The next prime is 78553. The reversal of 78542 is 24587.

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

It is a d-powerful number, because it can be written as 7³ + 8 + 5⁷ + 4³ + 2 .

It is a plaindrome in base 13.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 78542.

It is not an unprimeable number, because it can be changed into a prime (78541) 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, 233 + ... + 459.

It is an arithmetic number, because the mean of its divisors is an integer number (14877).

2⁷⁸⁵⁴² is an apocalyptic number.

78542 is a deficient number, since it is larger than the sum of its proper divisors (40474).

78542 is a wasteful number, since it uses less digits than its factorization.

78542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402.

The product of its digits is 2240, while the sum is 26.

The square root of 78542 is about 280.2534567137. The cubic root of 78542 is about 42.8253234714.

The spelling of 78542 in words is "seventy-eight thousand, five hundred forty-two".