1887142 has 4 divisors (see below), whose sum is σ = 2830716. Its totient is φ = 943570.

The previous prime is 1887133. The next prime is 1887143. The reversal of 1887142 is 2417881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2417881 = 1543 ⋅1567.

It is a super-2 number, since 2×1887142² = 7122609856328, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1887143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471784 + ... + 471787.

It is an arithmetic number, because the mean of its divisors is an integer number (707679).

2^1887142 is an apocalyptic number.

1887142 is a deficient number, since it is larger than the sum of its proper divisors (943574).

1887142 is an equidigital number, since it uses as much as digits as its factorization.

1887142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943573.

The product of its digits is 3584, while the sum is 31.

The square root of 1887142 is about 1373.7328706848. The cubic root of 1887142 is about 123.5762067431.

The spelling of 1887142 in words is "one million, eight hundred eighty-seven thousand, one hundred forty-two".