281420004289 has 4 divisors (see below), whose sum is σ = 283308729300. Its totient is φ = 279531279280.

The previous prime is 281420004251. The next prime is 281420004323. The reversal of 281420004289 is 982400024182.

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

It can be written as a sum of positive squares in 2 ways, for example, as 175540050625 + 105879953664 = 418975^2 + 325392^2 .

It is a cyclic number.

It is not a de Polignac number, because 281420004289 - 2²⁵ = 281386449857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (281420004689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944362282 + ... + 944362579.

It is an arithmetic number, because the mean of its divisors is an integer number (70827182325).

Almost surely, 2^281420004289 is an apocalyptic number.

It is an amenable number.

281420004289 is a deficient number, since it is larger than the sum of its proper divisors (1888725011).

281420004289 is a wasteful number, since it uses less digits than its factorization.

281420004289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888725010.

The product of its (nonzero) digits is 73728, while the sum is 40.

The spelling of 281420004289 in words is "two hundred eighty-one billion, four hundred twenty million, four thousand, two hundred eighty-nine".