168122429 has 2 divisors, whose sum is σ = 168122430. Its totient is φ = 168122428.

The previous prime is 168122419. The next prime is 168122441. The reversal of 168122429 is 924221861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163149529 + 4972900 = 12773^2 + 2230^2 .

It is a cyclic number.

It is not a de Polignac number, because 168122429 - 2⁸ = 168122173 is a prime.

It is a super-2 number, since 2×168122429² = 56530302265720082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168122419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84061214 + 84061215.

It is an arithmetic number, because the mean of its divisors is an integer number (84061215).

Almost surely, 2^168122429 is an apocalyptic number.

It is an amenable number.

168122429 is a deficient number, since it is larger than the sum of its proper divisors (1).

168122429 is an equidigital number, since it uses as much as digits as its factorization.

168122429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 35.

The square root of 168122429 is about 12966.2033379089. The cubic root of 168122429 is about 551.9188393680.

The spelling of 168122429 in words is "one hundred sixty-eight million, one hundred twenty-two thousand, four hundred twenty-nine".