122520543 has 4 divisors (see below), whose sum is σ = 163360728. Its totient is φ = 81680360.

The previous prime is 122520509. The next prime is 122520599. The reversal of 122520543 is 345025221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122520543 - 2⁹ = 122520031 is a prime.

It is a super-2 number, since 2×122520543² = 30022566914029698, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122520143) 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 3 ways as a sum of consecutive naturals, for example, 20420088 + ... + 20420093.

It is an arithmetic number, because the mean of its divisors is an integer number (40840182).

Almost surely, 2^122520543 is an apocalyptic number.

122520543 is a deficient number, since it is larger than the sum of its proper divisors (40840185).

122520543 is an equidigital number, since it uses as much as digits as its factorization.

122520543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40840184.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 122520543 is about 11068.8998098275. The cubic root of 122520543 is about 496.6719547105.

Adding to 122520543 its reverse (345025221), we get a palindrome (467545764).

The spelling of 122520543 in words is "one hundred twenty-two million, five hundred twenty thousand, five hundred forty-three".