121233423 has 16 divisors (see below), whose sum is σ = 168362496. Its totient is φ = 77525280.

The previous prime is 121233421. The next prime is 121233449. The reversal of 121233423 is 324332121.

It is not a de Polignac number, because 121233423 - 2¹ = 121233421 is a prime.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 121233423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121233421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190 + ... + 15572.

It is an arithmetic number, because the mean of its divisors is an integer number (10522656).

Almost surely, 2^121233423 is an apocalyptic number.

121233423 is a deficient number, since it is larger than the sum of its proper divisors (47129073).

121233423 is a wasteful number, since it uses less digits than its factorization.

121233423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15494.

The product of its digits is 864, while the sum is 21.

The square root of 121233423 is about 11010.6050242482. The cubic root of 121233423 is about 494.9265925222.

Adding to 121233423 its reverse (324332121), we get a palindrome (445565544).

The spelling of 121233423 in words is "one hundred twenty-one million, two hundred thirty-three thousand, four hundred twenty-three".