1376245139 has 2 divisors, whose sum is σ = 1376245140. Its totient is φ = 1376245138.

The previous prime is 1376245121. The next prime is 1376245147. The reversal of 1376245139 is 9315426731.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1376245139 is a prime.

It is a super-2 number, since 2×1376245139² = 3788101365242258642, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1376245096 and 1376245105.

It is not a weakly prime, because it can be changed into another prime (1376245439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 688122569 + 688122570.

It is an arithmetic number, because the mean of its divisors is an integer number (688122570).

Almost surely, 2^1376245139 is an apocalyptic number.

1376245139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1376245139 is an equidigital number, since it uses as much as digits as its factorization.

1376245139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 1376245139 is about 37097.7780871038. The cubic root of 1376245139 is about 1112.3256003015.

The spelling of 1376245139 in words is "one billion, three hundred seventy-six million, two hundred forty-five thousand, one hundred thirty-nine".