122803409 has 2 divisors, whose sum is σ = 122803410. Its totient is φ = 122803408.

The previous prime is 122803363. The next prime is 122803411. The reversal of 122803409 is 904308221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109662784 + 13140625 = 10472^2 + 3625^2 .

It is an emirp because it is prime and its reverse (904308221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122803409 - 2¹⁶ = 122737873 is a prime.

Together with 122803411, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (122803469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61401704 + 61401705.

It is an arithmetic number, because the mean of its divisors is an integer number (61401705).

Almost surely, 2^122803409 is an apocalyptic number.

It is an amenable number.

122803409 is a deficient number, since it is larger than the sum of its proper divisors (1).

122803409 is an equidigital number, since it uses as much as digits as its factorization.

122803409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 122803409 is about 11081.6699553813. The cubic root of 122803409 is about 497.0538869303.

The spelling of 122803409 in words is "one hundred twenty-two million, eight hundred three thousand, four hundred nine".