1142129 has 2 divisors, whose sum is σ = 1142130. Its totient is φ = 1142128.

The previous prime is 1142083. The next prime is 1142131. The reversal of 1142129 is 9212411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1000000 + 142129 = 1000^2 + 377^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142129 - 2²⁰ = 93553 is a prime.

Together with 1142131, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142129.

It is not a weakly prime, because it can be changed into another prime (1142159) 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, 571064 + 571065.

It is an arithmetic number, because the mean of its divisors is an integer number (571065).

2^1142129 is an apocalyptic number.

It is an amenable number.

1142129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142129 is an equidigital number, since it uses as much as digits as its factorization.

1142129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

The square root of 1142129 is about 1068.7043557505. The cubic root of 1142129 is about 104.5293828534.

The spelling of 1142129 in words is "one million, one hundred forty-two thousand, one hundred twenty-nine".