1248007139 has 2 divisors, whose sum is σ = 1248007140. Its totient is φ = 1248007138.

The previous prime is 1248007097. The next prime is 1248007169. The reversal of 1248007139 is 9317008421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1248007139 - 2²⁰ = 1246958563 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1248007099 and 1248007108.

It is not a weakly prime, because it can be changed into another prime (1248007169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624003569 + 624003570.

It is an arithmetic number, because the mean of its divisors is an integer number (624003570).

Almost surely, 2^1248007139 is an apocalyptic number.

1248007139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1248007139 is an equidigital number, since it uses as much as digits as its factorization.

1248007139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1248007139 is about 35327.1445067387. The cubic root of 1248007139 is about 1076.6445753385.

The spelling of 1248007139 in words is "one billion, two hundred forty-eight million, seven thousand, one hundred thirty-nine".