281420027 has 4 divisors (see below), whose sum is σ = 321622896. Its totient is φ = 241217160.

The previous prime is 281420021. The next prime is 281420063. The reversal of 281420027 is 720024182.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 281420027 - 2²⁸ = 12984571 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 281419978 and 281420005.

It is not an unprimeable number, because it can be changed into a prime (281420021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20101424 + ... + 20101437.

It is an arithmetic number, because the mean of its divisors is an integer number (80405724).

Almost surely, 2^281420027 is an apocalyptic number.

281420027 is a deficient number, since it is larger than the sum of its proper divisors (40202869).

281420027 is an equidigital number, since it uses as much as digits as its factorization.

281420027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40202868.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 281420027 is about 16775.5782910754. The cubic root of 281420027 is about 655.3173506362.

The spelling of 281420027 in words is "two hundred eighty-one million, four hundred twenty thousand, twenty-seven".