1247120713 has 2 divisors, whose sum is σ = 1247120714. Its totient is φ = 1247120712.

The previous prime is 1247120681. The next prime is 1247120723. The reversal of 1247120713 is 3170217421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1201800889 + 45319824 = 34667^2 + 6732^2 .

It is a cyclic number.

It is not a de Polignac number, because 1247120713 - 2⁵ = 1247120681 is a prime.

It is a super-4 number, since 4×1247120713⁴ (a number of 37 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (1247120723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623560356 + 623560357.

It is an arithmetic number, because the mean of its divisors is an integer number (623560357).

Almost surely, 2^1247120713 is an apocalyptic number.

It is an amenable number.

1247120713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1247120713 is an equidigital number, since it uses as much as digits as its factorization.

1247120713 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 1247120713 is about 35314.5963165374. The cubic root of 1247120713 is about 1076.3896110419.

The spelling of 1247120713 in words is "one billion, two hundred forty-seven million, one hundred twenty thousand, seven hundred thirteen".