52742 has 4 divisors (see below), whose sum is σ = 79116. Its totient is φ = 26370.

The previous prime is 52733. The next prime is 52747. The reversal of 52742 is 24725.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52747) by changing a digit.

52742 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 as a sum of consecutive naturals, namely, 13184 + ... + 13187.

It is an arithmetic number, because the mean of its divisors is an integer number (19779).

2⁵²⁷⁴² is an apocalyptic number.

52742 is a deficient number, since it is larger than the sum of its proper divisors (26374).

52742 is a wasteful number, since it uses less digits than its factorization.

52742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26373.

The product of its digits is 560, while the sum is 20.

The square root of 52742 is about 229.6562648830. The cubic root of 52742 is about 37.5018073203.

The spelling of 52742 in words is "fifty-two thousand, seven hundred forty-two".