121249423 has 16 divisors (see below), whose sum is σ = 133370496. Its totient is φ = 109762560.

The previous prime is 121249411. The next prime is 121249433. The reversal of 121249423 is 324942121.

It is a cyclic number.

It is not a de Polignac number, because 121249423 - 2⁵ = 121249391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121249391 and 121249400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121249433) 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, 49690 + ... + 52072.

It is an arithmetic number, because the mean of its divisors is an integer number (8335656).

Almost surely, 2^121249423 is an apocalyptic number.

121249423 is a deficient number, since it is larger than the sum of its proper divisors (12121073).

121249423 is a wasteful number, since it uses less digits than its factorization.

121249423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its digits is 3456, while the sum is 28.

The square root of 121249423 is about 11011.3315725211. The cubic root of 121249423 is about 494.9483645081.

The spelling of 121249423 in words is "one hundred twenty-one million, two hundred forty-nine thousand, four hundred twenty-three".