122651429 has 2 divisors, whose sum is σ = 122651430. Its totient is φ = 122651428.

The previous prime is 122651423. The next prime is 122651449. The reversal of 122651429 is 924156221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121506529 + 1144900 = 11023^2 + 1070^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122651429 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 122651395 and 122651404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122651423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61325714 + 61325715.

It is an arithmetic number, because the mean of its divisors is an integer number (61325715).

Almost surely, 2^122651429 is an apocalyptic number.

It is an amenable number.

122651429 is a deficient number, since it is larger than the sum of its proper divisors (1).

122651429 is an equidigital number, since it uses as much as digits as its factorization.

122651429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 32.

The square root of 122651429 is about 11074.8105627139. The cubic root of 122651429 is about 496.8487530088.

The spelling of 122651429 in words is "one hundred twenty-two million, six hundred fifty-one thousand, four hundred twenty-nine".