122509247 has 8 divisors (see below), whose sum is σ = 146098176. Its totient is φ = 100442232.

The previous prime is 122509223. The next prime is 122509267. The reversal of 122509247 is 742905221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122509247 - 2²² = 118314943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122509267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380303 + ... + 380624.

It is an arithmetic number, because the mean of its divisors is an integer number (18262272).

Almost surely, 2^122509247 is an apocalyptic number.

122509247 is a deficient number, since it is larger than the sum of its proper divisors (23588929).

122509247 is an equidigital number, since it uses as much as digits as its factorization.

122509247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760957.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 122509247 is about 11068.3895395852. The cubic root of 122509247 is about 496.6566903891.

The spelling of 122509247 in words is "one hundred twenty-two million, five hundred nine thousand, two hundred forty-seven".