122402543 has 4 divisors (see below), whose sum is σ = 123546600. Its totient is φ = 121258488.

The previous prime is 122402519. The next prime is 122402551. The reversal of 122402543 is 345204221.

It is a happy number.

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 122402543 - 2¹⁰ = 122401519 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 (122402143) 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 in 3 ways as a sum of consecutive naturals, for example, 571868 + ... + 572081.

It is an arithmetic number, because the mean of its divisors is an integer number (30886650).

Almost surely, 2^122402543 is an apocalyptic number.

122402543 is a deficient number, since it is larger than the sum of its proper divisors (1144057).

122402543 is a wasteful number, since it uses less digits than its factorization.

122402543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144056.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 122402543 is about 11063.5682761033. The cubic root of 122402543 is about 496.5124546129.

Adding to 122402543 its reverse (345204221), we get a palindrome (467606764).

The spelling of 122402543 in words is "one hundred twenty-two million, four hundred two thousand, five hundred forty-three".