126428259 has 4 divisors (see below), whose sum is σ = 168571016. Its totient is φ = 84285504.

The previous prime is 126428251. The next prime is 126428279. The reversal of 126428259 is 952824621.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 126428259 - 2³ = 126428251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126428251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21071374 + ... + 21071379.

It is an arithmetic number, because the mean of its divisors is an integer number (42142754).

Almost surely, 2^126428259 is an apocalyptic number.

126428259 is a deficient number, since it is larger than the sum of its proper divisors (42142757).

126428259 is an equidigital number, since it uses as much as digits as its factorization.

126428259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42142756.

The product of its digits is 69120, while the sum is 39.

The square root of 126428259 is about 11244.0321504343. The cubic root of 126428259 is about 501.8971379644.

The spelling of 126428259 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, two hundred fifty-nine".