122506543 has 4 divisors (see below), whose sum is σ = 122806480. Its totient is φ = 122206608.

The previous prime is 122506511. The next prime is 122506567. The reversal of 122506543 is 345605221.

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 122506543 - 2⁵ = 122506511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122506843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149355 + ... + 150172.

It is an arithmetic number, because the mean of its divisors is an integer number (30701620).

Almost surely, 2^122506543 is an apocalyptic number.

122506543 is a deficient number, since it is larger than the sum of its proper divisors (299937).

122506543 is an equidigital number, since it uses as much as digits as its factorization.

122506543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299936.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 122506543 is about 11068.2673892529. The cubic root of 122506543 is about 496.6530363260.

The spelling of 122506543 in words is "one hundred twenty-two million, five hundred six thousand, five hundred forty-three".