126288789 has 24 divisors (see below), whose sum is σ = 186246816. Its totient is φ = 76058400.

The previous prime is 126288781. The next prime is 126288793. The reversal of 126288789 is 987882621.

It is a happy number.

It is not a de Polignac number, because 126288789 - 2³ = 126288781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126288781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61794 + ... + 63804.

It is an arithmetic number, because the mean of its divisors is an integer number (7760284).

Almost surely, 2^126288789 is an apocalyptic number.

It is an amenable number.

126288789 is a deficient number, since it is larger than the sum of its proper divisors (59958027).

126288789 is a wasteful number, since it uses less digits than its factorization.

126288789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209 (or 2198 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 126288789 is about 11237.8284824071. The cubic root of 126288789 is about 501.7125132338.

The spelling of 126288789 in words is "one hundred twenty-six million, two hundred eighty-eight thousand, seven hundred eighty-nine".