424128985 has 16 divisors (see below), whose sum is σ = 581997312. Its totient is φ = 290664000.

The previous prime is 424128977. The next prime is 424129003. The reversal of 424128985 is 589821424.

It is not a de Polignac number, because 424128985 - 2³ = 424128977 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113700 + ... + 117370.

It is an arithmetic number, because the mean of its divisors is an integer number (36374832).

Almost surely, 2^424128985 is an apocalyptic number.

It is an amenable number.

424128985 is a deficient number, since it is larger than the sum of its proper divisors (157868327).

424128985 is a wasteful number, since it uses less digits than its factorization.

424128985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984.

The product of its digits is 184320, while the sum is 43.

The square root of 424128985 is about 20594.3920764853. The cubic root of 424128985 is about 751.3333230763. Note that the first 4 decimals are identical.

The spelling of 424128985 in words is "four hundred twenty-four million, one hundred twenty-eight thousand, nine hundred eighty-five".