126855249 has 4 divisors (see below), whose sum is σ = 169140336. Its totient is φ = 84570164.

The previous prime is 126855217. The next prime is 126855257. The reversal of 126855249 is 942558621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 942558621 = 3 ⋅314186207.

It is a cyclic number.

It is not a de Polignac number, because 126855249 - 2⁵ = 126855217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 126855249.

It is not an unprimeable number, because it can be changed into a prime (126855259) 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, 21142539 + ... + 21142544.

It is an arithmetic number, because the mean of its divisors is an integer number (42285084).

Almost surely, 2^126855249 is an apocalyptic number.

It is an amenable number.

126855249 is a deficient number, since it is larger than the sum of its proper divisors (42285087).

126855249 is an equidigital number, since it uses as much as digits as its factorization.

126855249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42285086.

The product of its digits is 172800, while the sum is 42.

The square root of 126855249 is about 11263.0035514511. The cubic root of 126855249 is about 502.4615272146.

The spelling of 126855249 in words is "one hundred twenty-six million, eight hundred fifty-five thousand, two hundred forty-nine".