1125143 has 2 divisors, whose sum is σ = 1125144. Its totient is φ = 1125142.

The previous prime is 1125139. The next prime is 1125151. The reversal of 1125143 is 3415211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1125143 - 2² = 1125139 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1125193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562571 + 562572.

It is an arithmetic number, because the mean of its divisors is an integer number (562572).

2^1125143 is an apocalyptic number.

1125143 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125143 is an equidigital number, since it uses as much as digits as its factorization.

1125143 is an evil number, because the sum of its binary digits is even.

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

The square root of 1125143 is about 1060.7275804843. The cubic root of 1125143 is about 104.0085976620.

The spelling of 1125143 in words is "one million, one hundred twenty-five thousand, one hundred forty-three".