254139 has 4 divisors (see below), whose sum is σ = 338856. Its totient is φ = 169424.

The previous prime is 254119. The next prime is 254141. The reversal of 254139 is 931452.

254139 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 254139 - 2¹² = 250043 is a prime.

It is a D-number.

254139 is strictly pandigital in base 7.

It is a plaindrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 254139.

It is not an unprimeable number, because it can be changed into a prime (254119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42354 + ... + 42359.

It is an arithmetic number, because the mean of its divisors is an integer number (84714).

2²⁵⁴¹³⁹ is an apocalyptic number.

254139 is a deficient number, since it is larger than the sum of its proper divisors (84717).

254139 is an equidigital number, since it uses as much as digits as its factorization.

254139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84716.

The product of its digits is 1080, while the sum is 24.

The square root of 254139 is about 504.1220090415. The cubic root of 254139 is about 63.3418055764.

It can be divided in two parts, 2541 and 39, that multiplied together give a palindrome (99099).

The spelling of 254139 in words is "two hundred fifty-four thousand, one hundred thirty-nine".