1081142 has 8 divisors (see below), whose sum is σ = 1633800. Its totient is φ = 536544.

The previous prime is 1081139. The next prime is 1081153. The reversal of 1081142 is 2411801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1081142.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1667 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (204225).

2^1081142 is an apocalyptic number.

1081142 is a deficient number, since it is larger than the sum of its proper divisors (552658).

1081142 is a wasteful number, since it uses less digits than its factorization.

1081142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4030.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1081142 is about 1039.7797843774. The cubic root of 1081142 is about 102.6347068865.

Adding to 1081142 its reverse (2411801), we get a palindrome (3492943).

The spelling of 1081142 in words is "one million, eighty-one thousand, one hundred forty-two".