122943621 has 8 divisors (see below), whose sum is σ = 165767040. Its totient is φ = 81041312.

The previous prime is 122943617. The next prime is 122943641. The reversal of 122943621 is 126349221.

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 122943621 - 2² = 122943617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122943641) 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, 229965 + ... + 230498.

It is an arithmetic number, because the mean of its divisors is an integer number (20720880).

Almost surely, 2^122943621 is an apocalyptic number.

It is an amenable number.

122943621 is a deficient number, since it is larger than the sum of its proper divisors (42823419).

122943621 is an equidigital number, since it uses as much as digits as its factorization.

122943621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460555.

The product of its digits is 5184, while the sum is 30.

The square root of 122943621 is about 11087.9944534618. The cubic root of 122943621 is about 497.2429870342.

It can be divided in two parts, 1229 and 43621, that added together give a triangular number (44850 = T₂₉₉).

The spelling of 122943621 in words is "one hundred twenty-two million, nine hundred forty-three thousand, six hundred twenty-one".