2643142 has 4 divisors (see below), whose sum is σ = 3964716. Its totient is φ = 1321570.

The previous prime is 2643133. The next prime is 2643161. The reversal of 2643142 is 2413462.

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: 2413462 = 2 ⋅1206731.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 2 + 6³ + 4² + 3¹³ + 1 + 4¹⁰ + 2³ .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660784 + ... + 660787.

It is an arithmetic number, because the mean of its divisors is an integer number (991179).

2^2643142 is an apocalyptic number.

2643142 is a deficient number, since it is larger than the sum of its proper divisors (1321574).

2643142 is a wasteful number, since it uses less digits than its factorization.

2643142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1321573.

The product of its digits is 1152, while the sum is 22.

The square root of 2643142 is about 1625.7742770754. The cubic root of 2643142 is about 138.2632725339.

The spelling of 2643142 in words is "two million, six hundred forty-three thousand, one hundred forty-two".