1244120123 has 2 divisors, whose sum is σ = 1244120124. Its totient is φ = 1244120122.

The previous prime is 1244120081. The next prime is 1244120147. The reversal of 1244120123 is 3210214421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244120123 - 2¹⁴ = 1244103739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1244120095 and 1244120104.

It is not a weakly prime, because it can be changed into another prime (1244120173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622060061 + 622060062.

It is an arithmetic number, because the mean of its divisors is an integer number (622060062).

Almost surely, 2^1244120123 is an apocalyptic number.

1244120123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244120123 is an equidigital number, since it uses as much as digits as its factorization.

1244120123 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1244120123 is about 35272.0870235942. The cubic root of 1244120123 is about 1075.5256482474.

Adding to 1244120123 its reverse (3210214421), we get a palindrome (4454334544).

The spelling of 1244120123 in words is "one billion, two hundred forty-four million, one hundred twenty thousand, one hundred twenty-three".