1244126456 has 8 divisors (see below), whose sum is σ = 2332737120. Its totient is φ = 622063224.

The previous prime is 1244126449. The next prime is 1244126459. The reversal of 1244126456 is 6546214421.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244126459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77757896 + ... + 77757911.

It is an arithmetic number, because the mean of its divisors is an integer number (291592140).

Almost surely, 2^1244126456 is an apocalyptic number.

It is an amenable number.

1244126456 is a deficient number, since it is larger than the sum of its proper divisors (1088610664).

1244126456 is a wasteful number, since it uses less digits than its factorization.

1244126456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155515813 (or 155515809 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 1244126456 is about 35272.1767970167. The cubic root of 1244126456 is about 1075.5274731763.

The spelling of 1244126456 in words is "one billion, two hundred forty-four million, one hundred twenty-six thousand, four hundred fifty-six".