128845426 has 8 divisors (see below), whose sum is σ = 193322844. Its totient is φ = 64404480.

The previous prime is 128845421. The next prime is 128845429. The reversal of 128845426 is 624548821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 128845201 + 225 = 11351^2 + 15^2 .

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

It is a super-2 number, since 2×128845426² = 33202287602242952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128845421) 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, 2866 + ... + 16306.

Almost surely, 2^128845426 is an apocalyptic number.

128845426 is a deficient number, since it is larger than the sum of its proper divisors (64477418).

128845426 is a wasteful number, since it uses less digits than its factorization.

128845426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18236.

The product of its digits is 122880, while the sum is 40.

The square root of 128845426 is about 11351.0099110167. The cubic root of 128845426 is about 505.0755381563.

The spelling of 128845426 in words is "one hundred twenty-eight million, eight hundred forty-five thousand, four hundred twenty-six".