2821129 has 4 divisors (see below), whose sum is σ = 2829184. Its totient is φ = 2813076.

The previous prime is 2821109. The next prime is 2821141. The reversal of 2821129 is 9211282.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9211282 = 2 ⋅4605641.

It is a cyclic number.

It is not a de Polignac number, because 2821129 - 2⁵ = 2821097 is a prime.

It is a Duffinian number.

2821129 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2821109) 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, 3477 + ... + 4210.

It is an arithmetic number, because the mean of its divisors is an integer number (707296).

2^2821129 is an apocalyptic number.

It is an amenable number.

2821129 is a deficient number, since it is larger than the sum of its proper divisors (8055).

2821129 is an equidigital number, since it uses as much as digits as its factorization.

2821129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8054.

The product of its digits is 576, while the sum is 25.

The square root of 2821129 is about 1679.6216835943. The cubic root of 2821129 is about 141.2996160570.

The spelling of 2821129 in words is "two million, eight hundred twenty-one thousand, one hundred twenty-nine".