122543543 has 2 divisors, whose sum is σ = 122543544. Its totient is φ = 122543542.

The previous prime is 122543539. The next prime is 122543587. The reversal of 122543543 is 345345221.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122543543 - 2² = 122543539 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122543503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61271771 + 61271772.

It is an arithmetic number, because the mean of its divisors is an integer number (61271772).

Almost surely, 2^122543543 is an apocalyptic number.

122543543 is a deficient number, since it is larger than the sum of its proper divisors (1).

122543543 is an equidigital number, since it uses as much as digits as its factorization.

122543543 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 29.

The square root of 122543543 is about 11069.9387080507. The cubic root of 122543543 is about 496.7030317852.

Adding to 122543543 its reverse (345345221), we get a palindrome (467888764).

The spelling of 122543543 in words is "one hundred twenty-two million, five hundred forty-three thousand, five hundred forty-three".