2842921 has 4 divisors (see below), whose sum is σ = 2851200. Its totient is φ = 2834644.

The previous prime is 2842901. The next prime is 2842937. The reversal of 2842921 is 1292482.

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 not a de Polignac number, because 2842921 - 2¹³ = 2834729 is a prime.

It is a pancake number, because a pancake can be divided into 2842921 parts by 2384 straight cuts.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2842921.

It is not an unprimeable number, because it can be changed into a prime (2842901) 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, 3601 + ... + 4318.

It is an arithmetic number, because the mean of its divisors is an integer number (712800).

2^2842921 is an apocalyptic number.

It is an amenable number.

2842921 is a deficient number, since it is larger than the sum of its proper divisors (8279).

2842921 is an equidigital number, since it uses as much as digits as its factorization.

2842921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8278.

The product of its digits is 2304, while the sum is 28.

The square root of 2842921 is about 1686.0963792144. The cubic root of 2842921 is about 141.6625093744.

The spelling of 2842921 in words is "two million, eight hundred forty-two thousand, nine hundred twenty-one".