121823918 has 8 divisors (see below), whose sum is σ = 183857448. Its totient is φ = 60538104.

The previous prime is 121823917. The next prime is 121823927. The reversal of 121823918 is 819328121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121823917) 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, 186521 + ... + 187172.

It is an arithmetic number, because the mean of its divisors is an integer number (22982181).

Almost surely, 2^121823918 is an apocalyptic number.

121823918 is a deficient number, since it is larger than the sum of its proper divisors (62033530).

121823918 is a wasteful number, since it uses less digits than its factorization.

121823918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373858.

The product of its digits is 6912, while the sum is 35.

The square root of 121823918 is about 11037.3872814176. The cubic root of 121823918 is about 495.7288423145.

The spelling of 121823918 in words is "one hundred twenty-one million, eight hundred twenty-three thousand, nine hundred eighteen".