122452009 has 2 divisors, whose sum is σ = 122452010. Its totient is φ = 122452008.

The previous prime is 122451997. The next prime is 122452013. The reversal of 122452009 is 900254221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100801600 + 21650409 = 10040^2 + 4653^2 .

It is a cyclic number.

It is not a de Polignac number, because 122452009 - 2⁷ = 122451881 is a prime.

It is not a weakly prime, because it can be changed into another prime (122452049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61226004 + 61226005.

It is an arithmetic number, because the mean of its divisors is an integer number (61226005).

Almost surely, 2^122452009 is an apocalyptic number.

It is an amenable number.

122452009 is a deficient number, since it is larger than the sum of its proper divisors (1).

122452009 is an equidigital number, since it uses as much as digits as its factorization.

122452009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 122452009 is about 11065.8035858224. The cubic root of 122452009 is about 496.5793300680.

The spelling of 122452009 in words is "one hundred twenty-two million, four hundred fifty-two thousand, nine".