126538 has 8 divisors (see below), whose sum is σ = 191520. Its totient is φ = 62700.

The previous prime is 126517. The next prime is 126541. The reversal of 126538 is 835621.

It is a happy number.

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

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93 + ... + 511.

It is an arithmetic number, because the mean of its divisors is an integer number (23940).

2¹²⁶⁵³⁸ is an apocalyptic number.

126538 is a deficient number, since it is larger than the sum of its proper divisors (64982).

126538 is a wasteful number, since it uses less digits than its factorization.

126538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572.

The product of its digits is 1440, while the sum is 25.

The square root of 126538 is about 355.7218014123. The cubic root of 126538 is about 50.2042313222.

The spelling of 126538 in words is "one hundred twenty-six thousand, five hundred thirty-eight".