2942209 has 4 divisors (see below), whose sum is σ = 2965504. Its totient is φ = 2918916.

The previous prime is 2942161. The next prime is 2942221. The reversal of 2942209 is 9022492.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2942209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2942249) 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, 11457 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (741376).

2^2942209 is an apocalyptic number.

It is an amenable number.

2942209 is a deficient number, since it is larger than the sum of its proper divisors (23295).

2942209 is a wasteful number, since it uses less digits than its factorization.

2942209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23294.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2942209 is about 1715.2868564762. The cubic root of 2942209 is about 143.2928453637.

The spelling of 2942209 in words is "two million, nine hundred forty-two thousand, two hundred nine".