126868289 has 4 divisors (see below), whose sum is σ = 127065024. Its totient is φ = 126671556.

The previous prime is 126868283. The next prime is 126868303. The reversal of 126868289 is 982868621.

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.

It is a cyclic number.

It is not a de Polignac number, because 126868289 - 2⁸ = 126868033 is a prime.

It is a super-4 number, since 4×126868289⁴ (a number of 34 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126868283) 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, 97397 + ... + 98690.

It is an arithmetic number, because the mean of its divisors is an integer number (31766256).

Almost surely, 2^126868289 is an apocalyptic number.

It is an amenable number.

126868289 is a deficient number, since it is larger than the sum of its proper divisors (196735).

126868289 is an equidigital number, since it uses as much as digits as its factorization.

126868289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196734.

The product of its digits is 663552, while the sum is 50.

The square root of 126868289 is about 11263.5824230127. The cubic root of 126868289 is about 502.4787433563.

The spelling of 126868289 in words is "one hundred twenty-six million, eight hundred sixty-eight thousand, two hundred eighty-nine".