126256135 has 4 divisors (see below), whose sum is σ = 151507368. Its totient is φ = 101004904.

The previous prime is 126256079. The next prime is 126256139. The reversal of 126256135 is 531652621.

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

It is a cyclic number.

It is not a de Polignac number, because 126256135 - 2²³ = 117867527 is a prime.

It is a super-2 number, since 2×126256135² = 31881223250276450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126256097 and 126256106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126256139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12625609 + ... + 12625618.

It is an arithmetic number, because the mean of its divisors is an integer number (37876842).

Almost surely, 2^126256135 is an apocalyptic number.

126256135 is a deficient number, since it is larger than the sum of its proper divisors (25251233).

126256135 is an equidigital number, since it uses as much as digits as its factorization.

126256135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25251232.

The product of its digits is 10800, while the sum is 31.

The square root of 126256135 is about 11236.3755277225. The cubic root of 126256135 is about 501.6692675565.

The spelling of 126256135 in words is "one hundred twenty-six million, two hundred fifty-six thousand, one hundred thirty-five".