282085421 has 2 divisors, whose sum is σ = 282085422. Its totient is φ = 282085420.

The previous prime is 282085361. The next prime is 282085429. The reversal of 282085421 is 124580282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262602025 + 19483396 = 16205^2 + 4414^2 .

It is a cyclic number.

It is not a de Polignac number, because 282085421 - 2¹⁸ = 281823277 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (282085429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141042710 + 141042711.

It is an arithmetic number, because the mean of its divisors is an integer number (141042711).

Almost surely, 2^282085421 is an apocalyptic number.

It is an amenable number.

282085421 is a deficient number, since it is larger than the sum of its proper divisors (1).

282085421 is an equidigital number, since it uses as much as digits as its factorization.

282085421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 282085421 is about 16795.3988044345. The cubic root of 282085421 is about 655.8334250431.

The spelling of 282085421 in words is "two hundred eighty-two million, eighty-five thousand, four hundred twenty-one".