253542 has 8 divisors (see below), whose sum is σ = 507096. Its totient is φ = 84512.

The previous prime is 253537. The next prime is 253543. The reversal of 253542 is 245352.

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

253542 is an admirable number.

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 253542.

It is not an unprimeable number, because it can be changed into a prime (253543) by changing a digit.

253542 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 in 3 ways as a sum of consecutive naturals, for example, 21123 + ... + 21134.

It is an arithmetic number, because the mean of its divisors is an integer number (63387).

2²⁵³⁵⁴² is an apocalyptic number.

253542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253542 is a wasteful number, since it uses less digits than its factorization.

253542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42262.

The product of its digits is 1200, while the sum is 21.

The square root of 253542 is about 503.5295423309. The cubic root of 253542 is about 63.2921677703.

Adding to 253542 its reverse (245352), we get a palindrome (498894).

The spelling of 253542 in words is "two hundred fifty-three thousand, five hundred forty-two".