122449509 has 128 divisors (see below), whose sum is σ = 244428800. Its totient is φ = 58786560.

The previous prime is 122449501. The next prime is 122449517. The reversal of 122449509 is 905944221.

It is an interprime number because it is at equal distance from previous prime (122449501) and next prime (122449517).

It is not a de Polignac number, because 122449509 - 2³ = 122449501 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122449501) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2007339 + ... + 2007399.

It is an arithmetic number, because the mean of its divisors is an integer number (1909600).

Almost surely, 2^122449509 is an apocalyptic number.

122449509 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

122449509 is a deficient number, since it is larger than the sum of its proper divisors (121979291).

122449509 is a wasteful number, since it uses less digits than its factorization.

122449509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 122449509 is about 11065.6906246289. The cubic root of 122449509 is about 496.5759506304.

The spelling of 122449509 in words is "one hundred twenty-two million, four hundred forty-nine thousand, five hundred nine".