255864842 has 8 divisors (see below), whose sum is σ = 394170276. Its totient is φ = 124474752.

The previous prime is 255864827. The next prime is 255864871. The reversal of 255864842 is 248468552.

It can be written as a sum of positive squares in 2 ways, for example, as 236513641 + 19351201 = 15379^2 + 4399^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 255864793 and 255864802.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1728743 + ... + 1728890.

Almost surely, 2^255864842 is an apocalyptic number.

255864842 is a deficient number, since it is larger than the sum of its proper divisors (138305434).

255864842 is a wasteful number, since it uses less digits than its factorization.

255864842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3457672.

The product of its digits is 614400, while the sum is 44.

The square root of 255864842 is about 15995.7757548673. The cubic root of 255864842 is about 634.8486563495.

The spelling of 255864842 in words is "two hundred fifty-five million, eight hundred sixty-four thousand, eight hundred forty-two".