122149459 has 2 divisors, whose sum is σ = 122149460. Its totient is φ = 122149458.

The previous prime is 122149457. The next prime is 122149463. The reversal of 122149459 is 954941221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122149459 - 2¹ = 122149457 is a prime.

Together with 122149457, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (122149453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61074729 + 61074730.

It is an arithmetic number, because the mean of its divisors is an integer number (61074730).

Almost surely, 2^122149459 is an apocalyptic number.

122149459 is a deficient number, since it is larger than the sum of its proper divisors (1).

122149459 is an equidigital number, since it uses as much as digits as its factorization.

122149459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 37.

The square root of 122149459 is about 11052.1246373718. The cubic root of 122149459 is about 496.1700160203.

The spelling of 122149459 in words is "one hundred twenty-two million, one hundred forty-nine thousand, four hundred fifty-nine".