1142909 has 2 divisors, whose sum is σ = 1142910. Its totient is φ = 1142908.

The previous prime is 1142891. The next prime is 1142917. The reversal of 1142909 is 9092411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1006009 + 136900 = 1003^2 + 370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571454 + 571455.

It is an arithmetic number, because the mean of its divisors is an integer number (571455).

2^1142909 is an apocalyptic number.

It is an amenable number.

1142909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142909 is an equidigital number, since it uses as much as digits as its factorization.

1142909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1142909 is about 1069.0692213323. The cubic root of 1142909 is about 104.5531730338.

The spelling of 1142909 in words is "one million, one hundred forty-two thousand, nine hundred nine".