1142185 has 16 divisors (see below), whose sum is σ = 1575360. Its totient is φ = 786240.

The previous prime is 1142171. The next prime is 1142191. The reversal of 1142185 is 5812411.

It is not a de Polignac number, because 1142185 - 2¹¹ = 1140137 is a prime.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 499 + ... + 1591.

It is an arithmetic number, because the mean of its divisors is an integer number (98460).

2^1142185 is an apocalyptic number.

It is an amenable number.

1142185 is a deficient number, since it is larger than the sum of its proper divisors (433175).

1142185 is a wasteful number, since it uses less digits than its factorization.

1142185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1128.

The product of its digits is 320, while the sum is 22.

The square root of 1142185 is about 1068.7305553787. The cubic root of 1142185 is about 104.5310912272.

Adding to 1142185 its reverse (5812411), we get a palindrome (6954596).

The spelling of 1142185 in words is "one million, one hundred forty-two thousand, one hundred eighty-five".