255143242 has 16 divisors (see below), whose sum is σ = 409785480. Its totient is φ = 118716928.

The previous prime is 255143221. The next prime is 255143269. The reversal of 255143242 is 242341552.

It can be written as a sum of positive squares in 4 ways, for example, as 186568281 + 68574961 = 13659^2 + 8281^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 255143242.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39133 + ... + 45184.

Almost surely, 2^255143242 is an apocalyptic number.

255143242 is a deficient number, since it is larger than the sum of its proper divisors (154642238).

255143242 is a wasteful number, since it uses less digits than its factorization.

255143242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84425.

The product of its digits is 9600, while the sum is 28.

The square root of 255143242 is about 15973.2038739885. The cubic root of 255143242 is about 634.2512861133.

Adding to 255143242 its reverse (242341552), we get a palindrome (497484794).

The spelling of 255143242 in words is "two hundred fifty-five million, one hundred forty-three thousand, two hundred forty-two".