282420857 has 2 divisors, whose sum is σ = 282420858. Its totient is φ = 282420856.

The previous prime is 282420851. The next prime is 282420869. The reversal of 282420857 is 758024282.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272283001 + 10137856 = 16501^2 + 3184^2 .

It is a cyclic number.

It is not a de Polignac number, because 282420857 - 2⁶ = 282420793 is a prime.

It is a super-2 number, since 2×282420857² = 159523080937228898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 282420857.

It is not a weakly prime, because it can be changed into another prime (282420851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141210428 + 141210429.

It is an arithmetic number, because the mean of its divisors is an integer number (141210429).

Almost surely, 2^282420857 is an apocalyptic number.

It is an amenable number.

282420857 is a deficient number, since it is larger than the sum of its proper divisors (1).

282420857 is an equidigital number, since it uses as much as digits as its factorization.

282420857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 282420857 is about 16805.3817867968. The cubic root of 282420857 is about 656.0932789539.

The spelling of 282420857 in words is "two hundred eighty-two million, four hundred twenty thousand, eight hundred fifty-seven".