2421829 has 4 divisors (see below), whose sum is σ = 2480940. Its totient is φ = 2362720.

The previous prime is 2421823. The next prime is 2421841. The reversal of 2421829 is 9281242.

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 859329 + 1562500 = 927^2 + 1250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2421829 - 2³ = 2421821 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2421797 and 2421806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421821) 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, 29494 + ... + 29575.

It is an arithmetic number, because the mean of its divisors is an integer number (620235).

2^2421829 is an apocalyptic number.

It is an amenable number.

2421829 is a deficient number, since it is larger than the sum of its proper divisors (59111).

2421829 is an equidigital number, since it uses as much as digits as its factorization.

2421829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59110.

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

The square root of 2421829 is about 1556.2226704428. Note that the first 3 decimals coincide. The cubic root of 2421829 is about 134.2912836402.

The spelling of 2421829 in words is "two million, four hundred twenty-one thousand, eight hundred twenty-nine".