1891142 has 16 divisors (see below), whose sum is σ = 3143232. Its totient is φ = 846120.

The previous prime is 1891133. The next prime is 1891147. The reversal of 1891142 is 2411981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1891147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 833 + ... + 2115.

It is an arithmetic number, because the mean of its divisors is an integer number (196452).

2^1891142 is an apocalyptic number.

1891142 is a deficient number, since it is larger than the sum of its proper divisors (1252090).

1891142 is a wasteful number, since it uses less digits than its factorization.

1891142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363.

The product of its digits is 576, while the sum is 26.

The square root of 1891142 is about 1375.1879871494. The cubic root of 1891142 is about 123.6634561381.

It can be divided in two parts, 189 and 1142, that added together give a palindrome (1331).

The spelling of 1891142 in words is "one million, eight hundred ninety-one thousand, one hundred forty-two".