121125423 has 8 divisors (see below), whose sum is σ = 161664048. Its totient is φ = 80668544.

The previous prime is 121125419. The next prime is 121125451. The reversal of 121125423 is 324521121.

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 121125423 - 2² = 121125419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121125423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121125413) 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, 16890 + ... + 22967.

It is an arithmetic number, because the mean of its divisors is an integer number (20208006).

Almost surely, 2^121125423 is an apocalyptic number.

121125423 is a deficient number, since it is larger than the sum of its proper divisors (40538625).

121125423 is a wasteful number, since it uses less digits than its factorization.

121125423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40873.

The product of its digits is 480, while the sum is 21.

The square root of 121125423 is about 11005.6995688598. The cubic root of 121125423 is about 494.7795814890.

Adding to 121125423 its reverse (324521121), we get a palindrome (445646544).

The spelling of 121125423 in words is "one hundred twenty-one million, one hundred twenty-five thousand, four hundred twenty-three".