122972447 has 4 divisors (see below), whose sum is σ = 132431880. Its totient is φ = 113513016.

The previous prime is 122972417. The next prime is 122972453. The reversal of 122972447 is 744279221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122972447 - 2¹⁶ = 122906911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122972447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122972417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4729697 + ... + 4729722.

It is an arithmetic number, because the mean of its divisors is an integer number (33107970).

Almost surely, 2^122972447 is an apocalyptic number.

122972447 is a deficient number, since it is larger than the sum of its proper divisors (9459433).

122972447 is an equidigital number, since it uses as much as digits as its factorization.

122972447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459432.

The product of its digits is 56448, while the sum is 38.

The square root of 122972447 is about 11089.2942516645. The cubic root of 122972447 is about 497.2818460552.

The spelling of 122972447 in words is "one hundred twenty-two million, nine hundred seventy-two thousand, four hundred forty-seven".