1159142 has 4 divisors (see below), whose sum is σ = 1738716. Its totient is φ = 579570.

The previous prime is 1159139. The next prime is 1159153. The reversal of 1159142 is 2419511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2419511 = 613 ⋅3947.

It is a super-2 number, since 2×1159142² = 2687220352328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289784 + ... + 289787.

It is an arithmetic number, because the mean of its divisors is an integer number (434679).

2^1159142 is an apocalyptic number.

1159142 is a deficient number, since it is larger than the sum of its proper divisors (579574).

1159142 is an equidigital number, since it uses as much as digits as its factorization.

1159142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579573.

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

The square root of 1159142 is about 1076.6345712450. The cubic root of 1159142 is about 105.0458454372.

The spelling of 1159142 in words is "one million, one hundred fifty-nine thousand, one hundred forty-two".