121423441 has 4 divisors (see below), whose sum is σ = 122052772. Its totient is φ = 120794112.

The previous prime is 121423429. The next prime is 121423451. The reversal of 121423441 is 144324121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21123216 + 100300225 = 4596^2 + 10015^2 .

It is a cyclic number.

It is not a de Polignac number, because 121423441 - 2⁵ = 121423409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121423411) 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, 314376 + ... + 314761.

It is an arithmetic number, because the mean of its divisors is an integer number (30513193).

Almost surely, 2^121423441 is an apocalyptic number.

It is an amenable number.

121423441 is a deficient number, since it is larger than the sum of its proper divisors (629331).

121423441 is an equidigital number, since it uses as much as digits as its factorization.

121423441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629330.

The product of its digits is 768, while the sum is 22.

The square root of 121423441 is about 11019.2305085246. The cubic root of 121423441 is about 495.1850357445.

Adding to 121423441 its reverse (144324121), we get a palindrome (265747562).

The spelling of 121423441 in words is "one hundred twenty-one million, four hundred twenty-three thousand, four hundred forty-one".