253442 has 16 divisors (see below), whose sum is σ = 445632. Its totient is φ = 105840.

The previous prime is 253439. The next prime is 253447. The reversal of 253442 is 244352.

253442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253442.

It is not an unprimeable number, because it can be changed into a prime (253447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392 + ... + 812.

It is an arithmetic number, because the mean of its divisors is an integer number (27852).

2²⁵³⁴⁴² is an apocalyptic number.

253442 is a deficient number, since it is larger than the sum of its proper divisors (192190).

253442 is a wasteful number, since it uses less digits than its factorization.

253442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473.

The product of its digits is 960, while the sum is 20.

The square root of 253442 is about 503.4302334981. The cubic root of 253442 is about 63.2838456132.

Adding to 253442 its reverse (244352), we get a palindrome (497794).

The spelling of 253442 in words is "two hundred fifty-three thousand, four hundred forty-two".