2102743 has 8 divisors (see below), whose sum is σ = 2182400. Its totient is φ = 2024568.

The previous prime is 2102741. The next prime is 2102753. The reversal of 2102743 is 3472012.

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

It is a cyclic number.

It is not a de Polignac number, because 2102743 - 2¹ = 2102741 is a prime.

It is an Ulam number.

It is a Duffinian number.

2102743 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2102743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102741) 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, 3088 + ... + 3706.

It is an arithmetic number, because the mean of its divisors is an integer number (272800).

2^2102743 is an apocalyptic number.

2102743 is a deficient number, since it is larger than the sum of its proper divisors (79657).

2102743 is an equidigital number, since it uses as much as digits as its factorization.

2102743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2102743 is about 1450.0837906825. The cubic root of 2102743 is about 128.1136482507.

Adding to 2102743 its reverse (3472012), we get a palindrome (5574755).

The spelling of 2102743 in words is "two million, one hundred two thousand, seven hundred forty-three".