126644233 has 4 divisors (see below), whose sum is σ = 132150528. Its totient is φ = 121137940.

The previous prime is 126644213. The next prime is 126644239. The reversal of 126644233 is 332446621.

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 126644233 - 2⁵ = 126644201 is a prime.

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 = 126644195 and 126644204.

It is not an unprimeable number, because it can be changed into a prime (126644239) 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, 2753113 + ... + 2753158.

It is an arithmetic number, because the mean of its divisors is an integer number (33037632).

Almost surely, 2^126644233 is an apocalyptic number.

It is an amenable number.

126644233 is a deficient number, since it is larger than the sum of its proper divisors (5506295).

126644233 is an equidigital number, since it uses as much as digits as its factorization.

126644233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5506294.

The product of its digits is 20736, while the sum is 31.

The square root of 126644233 is about 11253.6319914950. The cubic root of 126644233 is about 502.1827678494.

The spelling of 126644233 in words is "one hundred twenty-six million, six hundred forty-four thousand, two hundred thirty-three".