1172242517 has 2 divisors, whose sum is σ = 1172242518. Its totient is φ = 1172242516.

The previous prime is 1172242493. The next prime is 1172242529. The reversal of 1172242517 is 7152422711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1103169796 + 69072721 = 33214^2 + 8311^2 .

It is a cyclic number.

It is not a de Polignac number, because 1172242517 - 2⁶ = 1172242453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1172242567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 586121258 + 586121259.

It is an arithmetic number, because the mean of its divisors is an integer number (586121259).

Almost surely, 2^1172242517 is an apocalyptic number.

It is an amenable number.

1172242517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1172242517 is an equidigital number, since it uses as much as digits as its factorization.

1172242517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7840, while the sum is 32.

The square root of 1172242517 is about 34238.0273526382. The cubic root of 1172242517 is about 1054.4010337407.

The spelling of 1172242517 in words is "one billion, one hundred seventy-two million, two hundred forty-two thousand, five hundred seventeen".