1125139 has 2 divisors, whose sum is σ = 1125140. Its totient is φ = 1125138.

The previous prime is 1125127. The next prime is 1125143. The reversal of 1125139 is 9315211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1125139 - 2¹⁷ = 994067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1125109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562569 + 562570.

It is an arithmetic number, because the mean of its divisors is an integer number (562570).

2^1125139 is an apocalyptic number.

1125139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1125139 is an equidigital number, since it uses as much as digits as its factorization.

1125139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270, while the sum is 22.

The square root of 1125139 is about 1060.7256949843. The cubic root of 1125139 is about 104.0084744081.

The spelling of 1125139 in words is "one million, one hundred twenty-five thousand, one hundred thirty-nine".