2942845 has 4 divisors (see below), whose sum is σ = 3531420. Its totient is φ = 2354272.

The previous prime is 2942843. The next prime is 2942881. The reversal of 2942845 is 5482492.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2090916 + 851929 = 1446^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 2942845 - 2¹ = 2942843 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2942845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2942843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294280 + ... + 294289.

It is an arithmetic number, because the mean of its divisors is an integer number (882855).

2^2942845 is an apocalyptic number.

It is an amenable number.

2942845 is a deficient number, since it is larger than the sum of its proper divisors (588575).

2942845 is an equidigital number, since it uses as much as digits as its factorization.

2942845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588574.

The product of its digits is 23040, while the sum is 34.

The square root of 2942845 is about 1715.4722381898. The cubic root of 2942845 is about 143.3031695435.

The spelling of 2942845 in words is "two million, nine hundred forty-two thousand, eight hundred forty-five".