128945426 has 8 divisors (see below), whose sum is σ = 200087820. Its totient is φ = 62249488.

The previous prime is 128945417. The next prime is 128945431. The reversal of 128945426 is 624549821.

It can be written as a sum of positive squares in 2 ways, for example, as 127125625 + 1819801 = 11275^2 + 1349^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111541 + ... + 1111656.

Almost surely, 2^128945426 is an apocalyptic number.

128945426 is a deficient number, since it is larger than the sum of its proper divisors (71142394).

128945426 is a wasteful number, since it uses less digits than its factorization.

128945426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223228.

The product of its digits is 138240, while the sum is 41.

The square root of 128945426 is about 11355.4139510632. The cubic root of 128945426 is about 505.2061714128.

The spelling of 128945426 in words is "one hundred twenty-eight million, nine hundred forty-five thousand, four hundred twenty-six".