122723993 has 8 divisors (see below), whose sum is σ = 140440512. Its totient is φ = 105053616.

The previous prime is 122723981. The next prime is 122724013. The reversal of 122723993 is 399327221.

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 122723993 - 2¹⁶ = 122658457 is a prime.

It is a super-2 number, since 2×122723993² = 30122356915728098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122723933) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5630 + ... + 16647.

It is an arithmetic number, because the mean of its divisors is an integer number (17555064).

Almost surely, 2^122723993 is an apocalyptic number.

It is an amenable number.

122723993 is a deficient number, since it is larger than the sum of its proper divisors (17716519).

122723993 is an equidigital number, since it uses as much as digits as its factorization.

122723993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23071.

The product of its digits is 40824, while the sum is 38.

The square root of 122723993 is about 11078.0861614270. The cubic root of 122723993 is about 496.9467168768.

The spelling of 122723993 in words is "one hundred twenty-two million, seven hundred twenty-three thousand, nine hundred ninety-three".