128726122 has 16 divisors (see below), whose sum is σ = 220937472. Its totient is φ = 55102320.

The previous prime is 128726119. The next prime is 128726123. The reversal of 128726122 is 221627821.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (128726123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7708 + ... + 17800.

It is an arithmetic number, because the mean of its divisors is an integer number (13808592).

Almost surely, 2^128726122 is an apocalyptic number.

128726122 is a deficient number, since it is larger than the sum of its proper divisors (92211350).

128726122 is a wasteful number, since it uses less digits than its factorization.

128726122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11013.

The product of its digits is 5376, while the sum is 31.

The square root of 128726122 is about 11345.7534787250. The cubic root of 128726122 is about 504.9195990028.

The spelling of 128726122 in words is "one hundred twenty-eight million, seven hundred twenty-six thousand, one hundred twenty-two".