122565247 has 4 divisors (see below), whose sum is σ = 140074576. Its totient is φ = 105055920.

The previous prime is 122565239. The next prime is 122565259. The reversal of 122565247 is 742565221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742565221 = 67 ⋅11083063.

It is a cyclic number.

It is not a de Polignac number, because 122565247 - 2³ = 122565239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122565647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8754654 + ... + 8754667.

It is an arithmetic number, because the mean of its divisors is an integer number (35018644).

Almost surely, 2^122565247 is an apocalyptic number.

122565247 is a deficient number, since it is larger than the sum of its proper divisors (17509329).

122565247 is an equidigital number, since it uses as much as digits as its factorization.

122565247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17509328.

The product of its digits is 33600, while the sum is 34.

The square root of 122565247 is about 11070.9189772123. The cubic root of 122565247 is about 496.7323541685.

The spelling of 122565247 in words is "one hundred twenty-two million, five hundred sixty-five thousand, two hundred forty-seven".