121320424 has 16 divisors (see below), whose sum is σ = 227600100. Its totient is φ = 60627072.

The previous prime is 121320403. The next prime is 121320481. The reversal of 121320424 is 424023121.

It can be written as a sum of positive squares in 2 ways, for example, as 86155524 + 35164900 = 9282^2 + 5930^2 .

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, 19054 + ... + 24610.

Almost surely, 2^121320424 is an apocalyptic number.

It is an amenable number.

121320424 is a deficient number, since it is larger than the sum of its proper divisors (106279676).

121320424 is a wasteful number, since it uses less digits than its factorization.

121320424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8292 (or 8288 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 121320424 is about 11014.5550976878. Note that the first 3 decimals coincide. The cubic root of 121320424 is about 495.0449559551.

Adding to 121320424 its reverse (424023121), we get a palindrome (545343545).

The spelling of 121320424 in words is "one hundred twenty-one million, three hundred twenty thousand, four hundred twenty-four".