1143125 has 20 divisors (see below), whose sum is σ = 1499520. Its totient is φ = 870000.

The previous prime is 1143113. The next prime is 1143143. The reversal of 1143125 is 5213411.

1143125 = T₄ + T₅ + ... + T₁₈₉.

It is not a de Polignac number, because 1143125 - 2⁶ = 1143061 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19346 + ... + 19404.

It is an arithmetic number, because the mean of its divisors is an integer number (74976).

2^1143125 is an apocalyptic number.

It is an amenable number.

1143125 is a deficient number, since it is larger than the sum of its proper divisors (356395).

1143125 is an frugal number, since it uses more digits than its factorization.

1143125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 95 counting only the distinct ones).

The product of its digits is 120, while the sum is 17.

The square root of 1143125 is about 1069.1702390172. The cubic root of 1143125 is about 104.5597591700.

Adding to 1143125 its reverse (5213411), we get a palindrome (6356536).

The spelling of 1143125 in words is "one million, one hundred forty-three thousand, one hundred twenty-five".