2940243 has 4 divisors (see below), whose sum is σ = 3920328. Its totient is φ = 1960160.

The previous prime is 2940239. The next prime is 2940247. The reversal of 2940243 is 3420492.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (2940239) and next prime (2940247).

It is a cyclic number.

It is not a de Polignac number, because 2940243 - 2² = 2940239 is a prime.

It is a D-number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (2940247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490038 + ... + 490043.

It is an arithmetic number, because the mean of its divisors is an integer number (980082).

2^2940243 is an apocalyptic number.

2940243 is a deficient number, since it is larger than the sum of its proper divisors (980085).

2940243 is an equidigital number, since it uses as much as digits as its factorization.

2940243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980084.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 2940243 is about 1714.7136787231. The cubic root of 2940243 is about 143.2609219002.

Subtracting 2940243 from its reverse (3420492), we obtain a square (480249 = 693²).

The spelling of 2940243 in words is "two million, nine hundred forty thousand, two hundred forty-three".