1023255143 has 4 divisors (see below), whose sum is σ = 1083446640. Its totient is φ = 963063648.

The previous prime is 1023255097. The next prime is 1023255151. The reversal of 1023255143 is 3415523201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1023255143 - 2²⁰ = 1022206567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023255043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30095723 + ... + 30095756.

It is an arithmetic number, because the mean of its divisors is an integer number (270861660).

Almost surely, 2^1023255143 is an apocalyptic number.

1023255143 is a deficient number, since it is larger than the sum of its proper divisors (60191497).

1023255143 is an equidigital number, since it uses as much as digits as its factorization.

1023255143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60191496.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1023255143 is about 31988.3594921653. The cubic root of 1023255143 is about 1007.6923897464.

Adding to 1023255143 its reverse (3415523201), we get a palindrome (4438778344).

The spelling of 1023255143 in words is "one billion, twenty-three million, two hundred fifty-five thousand, one hundred forty-three".