122439901 has 2 divisors, whose sum is σ = 122439902. Its totient is φ = 122439900.

The previous prime is 122439859. The next prime is 122439917. The reversal of 122439901 is 109934221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81812025 + 40627876 = 9045^2 + 6374^2 .

It is an emirp because it is prime and its reverse (109934221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122439901 - 2¹⁵ = 122407133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122439931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61219950 + 61219951.

It is an arithmetic number, because the mean of its divisors is an integer number (61219951).

Almost surely, 2^122439901 is an apocalyptic number.

It is an amenable number.

122439901 is a deficient number, since it is larger than the sum of its proper divisors (1).

122439901 is an equidigital number, since it uses as much as digits as its factorization.

122439901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 122439901 is about 11065.2564814377. The cubic root of 122439901 is about 496.5629623477.

The spelling of 122439901 in words is "one hundred twenty-two million, four hundred thirty-nine thousand, nine hundred one".