122726399 has 2 divisors, whose sum is σ = 122726400. Its totient is φ = 122726398.

The previous prime is 122726393. The next prime is 122726423. The reversal of 122726399 is 993627221.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122726399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122726393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61363199 + 61363200.

It is an arithmetic number, because the mean of its divisors is an integer number (61363200).

Almost surely, 2^122726399 is an apocalyptic number.

122726399 is a deficient number, since it is larger than the sum of its proper divisors (1).

122726399 is an equidigital number, since it uses as much as digits as its factorization.

122726399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 41.

The square root of 122726399 is about 11078.1947536591. The cubic root of 122726399 is about 496.9499643971.

The spelling of 122726399 in words is "one hundred twenty-two million, seven hundred twenty-six thousand, three hundred ninety-nine".