427881 has 8 divisors (see below), whose sum is σ = 574240. Its totient is φ = 283392.

The previous prime is 427879. The next prime is 427883. The reversal of 427881 is 188724.

Added to its reverse (188724) it gives a triangular number (616605 = T₁₁₁₀).

It is an interprime number because it is at equal distance from previous prime (427879) and next prime (427883).

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

It is not a de Polignac number, because 427881 - 2¹ = 427879 is a prime.

It is a super-2 number, since 2×427881² = 366164300322, which contains 22 as substring.

It is a Duffinian number.

427881 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 427881.

It is not an unprimeable number, because it can be changed into a prime (427883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210 + ... + 948.

It is an arithmetic number, because the mean of its divisors is an integer number (71780).

2⁴²⁷⁸⁸¹ is an apocalyptic number.

It is an amenable number.

427881 is a deficient number, since it is larger than the sum of its proper divisors (146359).

427881 is a wasteful number, since it uses less digits than its factorization.

427881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935.

The product of its digits is 3584, while the sum is 30.

The square root of 427881 is about 654.1261346254. The cubic root of 427881 is about 75.3542353743.

Adding to 427881 its reverse (188724), we get a triangular number (616605 = T₁₁₁₀).

The spelling of 427881 in words is "four hundred twenty-seven thousand, eight hundred eighty-one".