254742 has 8 divisors (see below), whose sum is σ = 509496. Its totient is φ = 84912.

The previous prime is 254741. The next prime is 254747. The reversal of 254742 is 247452.

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

254742 is an admirable number.

It is an Ulam 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 254742.

It is not an unprimeable number, because it can be changed into a prime (254741) 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, 21223 + ... + 21234.

It is an arithmetic number, because the mean of its divisors is an integer number (63687).

2²⁵⁴⁷⁴² is an apocalyptic number.

254742 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.

254742 is a wasteful number, since it uses less digits than its factorization.

254742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42462.

The product of its digits is 2240, while the sum is 24.

The square root of 254742 is about 504.7197242034. The cubic root of 254742 is about 63.3918634053.

The spelling of 254742 in words is "two hundred fifty-four thousand, seven hundred forty-two".