1244052539 has 2 divisors, whose sum is σ = 1244052540. Its totient is φ = 1244052538.

The previous prime is 1244052487. The next prime is 1244052581. The reversal of 1244052539 is 9352504421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1244052539 - 2⁸ = 1244052283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1244052499 and 1244052508.

It is not a weakly prime, because it can be changed into another prime (1244058539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622026269 + 622026270.

It is an arithmetic number, because the mean of its divisors is an integer number (622026270).

Almost surely, 2^1244052539 is an apocalyptic number.

1244052539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244052539 is an equidigital number, since it uses as much as digits as its factorization.

1244052539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 1244052539 is about 35271.1289725747. The cubic root of 1244052539 is about 1075.5061727320.

The spelling of 1244052539 in words is "one billion, two hundred forty-four million, fifty-two thousand, five hundred thirty-nine".