126428911 has 4 divisors (see below), whose sum is σ = 144490192. Its totient is φ = 108367632.

The previous prime is 126428909. The next prime is 126428923. The reversal of 126428911 is 119824621.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 126428911 - 2¹ = 126428909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126428941) 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, 9030630 + ... + 9030643.

It is an arithmetic number, because the mean of its divisors is an integer number (36122548).

Almost surely, 2^126428911 is an apocalyptic number.

126428911 is a deficient number, since it is larger than the sum of its proper divisors (18061281).

126428911 is an equidigital number, since it uses as much as digits as its factorization.

126428911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18061280.

The product of its digits is 6912, while the sum is 34.

The square root of 126428911 is about 11244.0611435548. The cubic root of 126428911 is about 501.8980007366.

The spelling of 126428911 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, nine hundred eleven".