1142159 has 2 divisors, whose sum is σ = 1142160. Its totient is φ = 1142158.

The previous prime is 1142131. The next prime is 1142161. The reversal of 1142159 is 9512411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142159 is a prime.

Together with 1142161, it forms a pair of twin primes.

It is a Chen 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 (1142129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571079 + 571080.

It is an arithmetic number, because the mean of its divisors is an integer number (571080).

2^1142159 is an apocalyptic number.

1142159 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142159 is an equidigital number, since it uses as much as digits as its factorization.

1142159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 23.

The square root of 1142159 is about 1068.7183913454. The cubic root of 1142159 is about 104.5302980606.

The spelling of 1142159 in words is "one million, one hundred forty-two thousand, one hundred fifty-nine".