121655423 has 8 divisors (see below), whose sum is σ = 128536320. Its totient is φ = 114822360.

The previous prime is 121655419. The next prime is 121655437. The reversal of 121655423 is 324556121.

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 121655423 - 2² = 121655419 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 (121655483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6665 + ... + 16962.

It is an arithmetic number, because the mean of its divisors is an integer number (16067040).

Almost surely, 2^121655423 is an apocalyptic number.

121655423 is a deficient number, since it is larger than the sum of its proper divisors (6880897).

121655423 is a wasteful number, since it uses less digits than its factorization.

121655423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23917.

The product of its digits is 7200, while the sum is 29.

The square root of 121655423 is about 11029.7517197805. The cubic root of 121655423 is about 495.5001888846.

The spelling of 121655423 in words is "one hundred twenty-one million, six hundred fifty-five thousand, four hundred twenty-three".