121534320 has 40 divisors (see below), whose sum is σ = 376757136. Its totient is φ = 32409088.

The previous prime is 121534289. The next prime is 121534351. The reversal of 121534320 is 23435121.

It is an interprime number because it is at equal distance from previous prime (121534289) and next prime (121534351).

It is a tau number, because it is divible by the number of its divisors (40).

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, 252957 + ... + 253436.

Almost surely, 2^121534320 is an apocalyptic number.

121534320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121534320 is an abundant number, since it is smaller than the sum of its proper divisors (255222816).

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

121534320 is a wasteful number, since it uses less digits than its factorization.

121534320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506409 (or 506403 counting only the distinct ones).

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

The square root of 121534320 is about 11024.2605194181. The cubic root of 121534320 is about 495.3357175708.

Adding to 121534320 its reverse (23435121), we get a palindrome (144969441).

The spelling of 121534320 in words is "one hundred twenty-one million, five hundred thirty-four thousand, three hundred twenty".