122628559 has 8 divisors (see below), whose sum is σ = 128752560. Its totient is φ = 116630976.

The previous prime is 122628553. The next prime is 122628577. The reversal of 122628559 is 955826221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122628559 - 2¹⁵ = 122595791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122628553) 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 7 ways as a sum of consecutive naturals, for example, 29614 + ... + 33499.

It is an arithmetic number, because the mean of its divisors is an integer number (16094070).

Almost surely, 2^122628559 is an apocalyptic number.

122628559 is a deficient number, since it is larger than the sum of its proper divisors (6124001).

122628559 is an equidigital number, since it uses as much as digits as its factorization.

122628559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63209.

The product of its digits is 86400, while the sum is 40.

The square root of 122628559 is about 11073.7779912729. Note that the first 3 decimals coincide. The cubic root of 122628559 is about 496.8178697233.

The spelling of 122628559 in words is "one hundred twenty-two million, six hundred twenty-eight thousand, five hundred fifty-nine".