121530324 has 24 divisors (see below), whose sum is σ = 288378720. Its totient is φ = 39823264.

The previous prime is 121530319. The next prime is 121530337. The reversal of 121530324 is 423035121.

It is a self number, because there is not a number n which added to its sum of digits gives 121530324.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85119 + ... + 86534.

It is an arithmetic number, because the mean of its divisors is an integer number (12015780).

Almost surely, 2^121530324 is an apocalyptic number.

It is an amenable number.

121530324 is an abundant number, since it is smaller than the sum of its proper divisors (166848396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121530324 is a wasteful number, since it uses less digits than its factorization.

121530324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171719 (or 171717 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 121530324 is about 11024.0792812824. The cubic root of 121530324 is about 495.3302886976.

Adding to 121530324 its reverse (423035121), we get a palindrome (544565445).

The spelling of 121530324 in words is "one hundred twenty-one million, five hundred thirty thousand, three hundred twenty-four".