121543463 has 2 divisors, whose sum is σ = 121543464. Its totient is φ = 121543462.

The previous prime is 121543453. The next prime is 121543507. The reversal of 121543463 is 364345121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121543463 - 2⁸ = 121543207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121543403) 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 as a sum of consecutive naturals, namely, 60771731 + 60771732.

It is an arithmetic number, because the mean of its divisors is an integer number (60771732).

Almost surely, 2^121543463 is an apocalyptic number.

121543463 is a deficient number, since it is larger than the sum of its proper divisors (1).

121543463 is an equidigital number, since it uses as much as digits as its factorization.

121543463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 121543463 is about 11024.6751879591. The cubic root of 121543463 is about 495.3481385914.

Adding to 121543463 its reverse (364345121), we get a palindrome (485888584).

The spelling of 121543463 in words is "one hundred twenty-one million, five hundred forty-three thousand, four hundred sixty-three".