126428905 has 8 divisors (see below), whose sum is σ = 154202184. Its totient is φ = 99484800.

The previous prime is 126428899. The next prime is 126428909. The reversal of 126428905 is 509824621.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 126427536 = 37^2 + 11244^2 .

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

It is not a de Polignac number, because 126428905 - 2⁵ = 126428873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126428909) 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, 206956 + ... + 207565.

It is an arithmetic number, because the mean of its divisors is an integer number (19275273).

Almost surely, 2^126428905 is an apocalyptic number.

It is an amenable number.

126428905 is a deficient number, since it is larger than the sum of its proper divisors (27773279).

126428905 is an equidigital number, since it uses as much as digits as its factorization.

126428905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414587.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 126428905 is about 11244.0608767473. The cubic root of 126428905 is about 501.8979927970.

The spelling of 126428905 in words is "one hundred twenty-six million, four hundred twenty-eight thousand, nine hundred five".