138254 has 4 divisors (see below), whose sum is σ = 207384. Its totient is φ = 69126.

The previous prime is 138251. The next prime is 138283. The reversal of 138254 is 452831.

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

It is a super-2 number, since 2×138254² = 38228337032, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138251) by changing a digit.

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, 34562 + ... + 34565.

It is an arithmetic number, because the mean of its divisors is an integer number (51846).

2¹³⁸²⁵⁴ is an apocalyptic number.

138254 is a deficient number, since it is larger than the sum of its proper divisors (69130).

138254 is an equidigital number, since it uses as much as digits as its factorization.

138254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69129.

The product of its digits is 960, while the sum is 23.

The square root of 138254 is about 371.8252277616. The cubic root of 138254 is about 51.7081779929.

The spelling of 138254 in words is "one hundred thirty-eight thousand, two hundred fifty-four".