1244122423 has 4 divisors (see below), whose sum is σ = 1244557440. Its totient is φ = 1243687408.

The previous prime is 1244122391. The next prime is 1244122427. The reversal of 1244122423 is 3242214421.

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 1244122423 - 2⁵ = 1244122391 is a prime.

It is a super-2 number, since 2×1244122423² = 3095681206822781858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244122427) 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 in 3 ways as a sum of consecutive naturals, for example, 213190 + ... + 218947.

It is an arithmetic number, because the mean of its divisors is an integer number (311139360).

Almost surely, 2^1244122423 is an apocalyptic number.

1244122423 is a deficient number, since it is larger than the sum of its proper divisors (435017).

1244122423 is an equidigital number, since it uses as much as digits as its factorization.

1244122423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435016.

The product of its digits is 3072, while the sum is 25.

The square root of 1244122423 is about 35272.1196272637. The cubic root of 1244122423 is about 1075.5263110203.

Adding to 1244122423 its reverse (3242214421), we get a palindrome (4486336844).

The spelling of 1244122423 in words is "one billion, two hundred forty-four million, one hundred twenty-two thousand, four hundred twenty-three".