121423444 has 12 divisors (see below), whose sum is σ = 212581600. Its totient is φ = 60685848.

The previous prime is 121423429. The next prime is 121423451. The reversal of 121423444 is 444324121.

It is a super-2 number, since 2×121423444² = 29487305505642272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7387 + ... + 17245.

Almost surely, 2^121423444 is an apocalyptic number.

It is an amenable number.

121423444 is a deficient number, since it is larger than the sum of its proper divisors (91158156).

121423444 is a wasteful number, since it uses less digits than its factorization.

121423444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12942 (or 12940 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 121423444 is about 11019.2306446503. The cubic root of 121423444 is about 495.1850398227.

Adding to 121423444 its reverse (444324121), we get a palindrome (565747565).

The spelling of 121423444 in words is "one hundred twenty-one million, four hundred twenty-three thousand, four hundred forty-four".