169142317 has 2 divisors, whose sum is σ = 169142318. Its totient is φ = 169142316.

The previous prime is 169142279. The next prime is 169142327. The reversal of 169142317 is 713241961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95628841 + 73513476 = 9779^2 + 8574^2 .

It is a cyclic number.

It is not a de Polignac number, because 169142317 - 2⁷ = 169142189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (169142327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84571158 + 84571159.

It is an arithmetic number, because the mean of its divisors is an integer number (84571159).

Almost surely, 2^169142317 is an apocalyptic number.

It is an amenable number.

169142317 is a deficient number, since it is larger than the sum of its proper divisors (1).

169142317 is an equidigital number, since it uses as much as digits as its factorization.

169142317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 34.

The square root of 169142317 is about 13005.4725788800. The cubic root of 169142317 is about 553.0326328234.

The spelling of 169142317 in words is "one hundred sixty-nine million, one hundred forty-two thousand, three hundred seventeen".