121543230 has 32 divisors (see below), whose sum is σ = 293184000. Its totient is φ = 32247072.

The previous prime is 121543223. The next prime is 121543237. The reversal of 121543230 is 32345121.

It is an interprime number because it is at equal distance from previous prime (121543223) and next prime (121543237).

It is a junction number, because it is equal to n+sod(n) for n = 121543197 and 121543206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121543237) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4210 + ... + 16149.

It is an arithmetic number, because the mean of its divisors is an integer number (9162000).

Almost surely, 2^121543230 is an apocalyptic number.

121543230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121543230 is an abundant number, since it is smaller than the sum of its proper divisors (171640770).

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

121543230 is a wasteful number, since it uses less digits than its factorization.

121543230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20568.

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

The square root of 121543230 is about 11024.6646207492. The cubic root of 121543230 is about 495.3478220622.

Adding to 121543230 its reverse (32345121), we get a palindrome (153888351).

The spelling of 121543230 in words is "one hundred twenty-one million, five hundred forty-three thousand, two hundred thirty".