122636543 has 2 divisors, whose sum is σ = 122636544. Its totient is φ = 122636542.

The previous prime is 122636533. The next prime is 122636557. The reversal of 122636543 is 345636221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122636543 - 2²² = 118442239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122636533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61318271 + 61318272.

It is an arithmetic number, because the mean of its divisors is an integer number (61318272).

Almost surely, 2^122636543 is an apocalyptic number.

122636543 is a deficient number, since it is larger than the sum of its proper divisors (1).

122636543 is an equidigital number, since it uses as much as digits as its factorization.

122636543 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 32.

The square root of 122636543 is about 11074.1384766491. The cubic root of 122636543 is about 496.8286516266.

The spelling of 122636543 in words is "one hundred twenty-two million, six hundred thirty-six thousand, five hundred forty-three".