2842391 has 4 divisors (see below), whose sum is σ = 2871792. Its totient is φ = 2812992.

The previous prime is 2842373. The next prime is 2842397. The reversal of 2842391 is 1932482.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1932482 = 2 ⋅966241.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2842391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2842397) 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, 14555 + ... + 14748.

It is an arithmetic number, because the mean of its divisors is an integer number (717948).

2^2842391 is an apocalyptic number.

2842391 is a deficient number, since it is larger than the sum of its proper divisors (29401).

2842391 is an equidigital number, since it uses as much as digits as its factorization.

2842391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29400.

The product of its digits is 3456, while the sum is 29.

The square root of 2842391 is about 1685.9392041233. The cubic root of 2842391 is about 141.6537055424.

Subtracting from 2842391 its reverse (1932482), we obtain a palindrome (909909).

The spelling of 2842391 in words is "two million, eight hundred forty-two thousand, three hundred ninety-one".