122242489 has 2 divisors, whose sum is σ = 122242490. Its totient is φ = 122242488.

The previous prime is 122242469. The next prime is 122242531. The reversal of 122242489 is 984242221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118984464 + 3258025 = 10908^2 + 1805^2 .

It is an emirp because it is prime and its reverse (984242221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122242489 - 2⁵ = 122242457 is a prime.

It is a super-2 number, since 2×122242489² = 29886452233830242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122242429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61121244 + 61121245.

It is an arithmetic number, because the mean of its divisors is an integer number (61121245).

Almost surely, 2^122242489 is an apocalyptic number.

It is an amenable number.

122242489 is a deficient number, since it is larger than the sum of its proper divisors (1).

122242489 is an equidigital number, since it uses as much as digits as its factorization.

122242489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 34.

The square root of 122242489 is about 11056.3325293698. The cubic root of 122242489 is about 496.2959464001.

The spelling of 122242489 in words is "one hundred twenty-two million, two hundred forty-two thousand, four hundred eighty-nine".