125438 has 8 divisors (see below), whose sum is σ = 198120. Its totient is φ = 59400.

The previous prime is 125429. The next prime is 125441. The reversal of 125438 is 834521.

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

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

125438 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1613 + ... + 1688.

It is an arithmetic number, because the mean of its divisors is an integer number (24765).

2¹²⁵⁴³⁸ is an apocalyptic number.

125438 is a deficient number, since it is larger than the sum of its proper divisors (72682).

125438 is a wasteful number, since it uses less digits than its factorization.

125438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3322.

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

The square root of 125438 is about 354.1722744654. The cubic root of 125438 is about 50.0583319213.

Adding to 125438 its reverse (834521), we get a palindrome (959959).

It can be divided in two parts, 12 and 5438, that multiplied together give a palindrome (65256).

The spelling of 125438 in words is "one hundred twenty-five thousand, four hundred thirty-eight".