122168729 has 2 divisors, whose sum is σ = 122168730. Its totient is φ = 122168728.

The previous prime is 122168713. The next prime is 122168741. The reversal of 122168729 is 927861221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111619225 + 10549504 = 10565^2 + 3248^2 .

It is a cyclic number.

It is not a de Polignac number, because 122168729 - 2⁴ = 122168713 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122168692 and 122168701.

It is not a weakly prime, because it can be changed into another prime (122168759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61084364 + 61084365.

It is an arithmetic number, because the mean of its divisors is an integer number (61084365).

Almost surely, 2^122168729 is an apocalyptic number.

It is an amenable number.

122168729 is a deficient number, since it is larger than the sum of its proper divisors (1).

122168729 is an equidigital number, since it uses as much as digits as its factorization.

122168729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 38.

The square root of 122168729 is about 11052.9963810724. The cubic root of 122168729 is about 496.1961061713.

The spelling of 122168729 in words is "one hundred twenty-two million, one hundred sixty-eight thousand, seven hundred twenty-nine".