122405903 has 2 divisors, whose sum is σ = 122405904. Its totient is φ = 122405902.

The previous prime is 122405873. The next prime is 122405911. The reversal of 122405903 is 309504221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 122405903 - 2¹⁶ = 122340367 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122405603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61202951 + 61202952.

It is an arithmetic number, because the mean of its divisors is an integer number (61202952).

Almost surely, 2^122405903 is an apocalyptic number.

122405903 is a deficient number, since it is larger than the sum of its proper divisors (1).

122405903 is an equidigital number, since it uses as much as digits as its factorization.

122405903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 122405903 is about 11063.7201248043. The cubic root of 122405903 is about 496.5169977282.

The spelling of 122405903 in words is "one hundred twenty-two million, four hundred five thousand, nine hundred three".