138454 has 8 divisors (see below), whose sum is σ = 213408. Its totient is φ = 67320.

The previous prime is 138451. The next prime is 138461. The reversal of 138454 is 454831.

138454 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138451) 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, 862 + ... + 1009.

It is an arithmetic number, because the mean of its divisors is an integer number (26676).

2¹³⁸⁴⁵⁴ is an apocalyptic number.

138454 is a deficient number, since it is larger than the sum of its proper divisors (74954).

138454 is a wasteful number, since it uses less digits than its factorization.

138454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910.

The product of its digits is 1920, while the sum is 25.

The square root of 138454 is about 372.0940741264. The cubic root of 138454 is about 51.7330998826.

The spelling of 138454 in words is "one hundred thirty-eight thousand, four hundred fifty-four".