128135426 has 16 divisors (see below), whose sum is σ = 204736896. Its totient is φ = 59935296.

The previous prime is 128135419. The next prime is 128135453. The reversal of 128135426 is 624531821.

It is a junction number, because it is equal to n+sod(n) for n = 128135392 and 128135401.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5606 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (12796056).

Almost surely, 2^128135426 is an apocalyptic number.

128135426 is a deficient number, since it is larger than the sum of its proper divisors (76601470).

128135426 is a wasteful number, since it uses less digits than its factorization.

128135426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22753.

The product of its digits is 11520, while the sum is 32.

The square root of 128135426 is about 11319.6919569395. The cubic root of 128135426 is about 504.1460928001.

The spelling of 128135426 in words is "one hundred twenty-eight million, one hundred thirty-five thousand, four hundred twenty-six".