121043023 has 4 divisors (see below), whose sum is σ = 121099048. Its totient is φ = 120987000.

The previous prime is 121042991. The next prime is 121043051. The reversal of 121043023 is 320340121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320340121 = 173 ⋅1851677.

It is a cyclic number.

It is not a de Polignac number, because 121043023 - 2⁵ = 121042991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121042988 and 121043006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121043063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24636 + ... + 29137.

It is an arithmetic number, because the mean of its divisors is an integer number (30274762).

Almost surely, 2^121043023 is an apocalyptic number.

121043023 is a deficient number, since it is larger than the sum of its proper divisors (56025).

121043023 is an equidigital number, since it uses as much as digits as its factorization.

121043023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56024.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 121043023 is about 11001.9554171065. The cubic root of 121043023 is about 494.6673587338.

Adding to 121043023 its reverse (320340121), we get a palindrome (441383144).

The spelling of 121043023 in words is "one hundred twenty-one million, forty-three thousand, twenty-three".