126503256 has 128 divisors (see below), whose sum is σ = 371381760. Its totient is φ = 35481600.

The previous prime is 126503231. The next prime is 126503317. The reversal of 126503256 is 652305621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318450 + ... + 318846.

It is an arithmetic number, because the mean of its divisors is an integer number (2901420).

Almost surely, 2^126503256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126503256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185690880).

126503256 is an abundant number, since it is smaller than the sum of its proper divisors (244878504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126503256 is a wasteful number, since it uses less digits than its factorization.

126503256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505 (or 501 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 126503256 is about 11247.3666251261. The cubic root of 126503256 is about 501.9963598197.

Adding to 126503256 its reverse (652305621), we get a palindrome (778808877).

The spelling of 126503256 in words is "one hundred twenty-six million, five hundred three thousand, two hundred fifty-six".