427105217 has 24 divisors (see below), whose sum is σ = 552267072. Its totient is φ = 326508000.

The previous prime is 427105187. The next prime is 427105219. The reversal of 427105217 is 712501724.

It is not a de Polignac number, because 427105217 - 2¹⁰ = 427104193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 427105217.

It is not an unprimeable number, because it can be changed into a prime (427105219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21092 + ... + 36042.

It is an arithmetic number, because the mean of its divisors is an integer number (23011128).

Almost surely, 2^427105217 is an apocalyptic number.

It is an amenable number.

427105217 is a deficient number, since it is larger than the sum of its proper divisors (125161855).

427105217 is a wasteful number, since it uses less digits than its factorization.

427105217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15029 (or 15022 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 427105217 is about 20666.5240667123. The cubic root of 427105217 is about 753.0866670732.

The spelling of 427105217 in words is "four hundred twenty-seven million, one hundred five thousand, two hundred seventeen".