3342821 has 2 divisors, whose sum is σ = 3342822. Its totient is φ = 3342820.

The previous prime is 3342809. The next prime is 3342847. The reversal of 3342821 is 1282433.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2292196 + 1050625 = 1514^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 3342821 - 2¹⁸ = 3080677 is a prime.

It is a super-2 number, since 2×3342821² = 22348904476082, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3342721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1671410 + 1671411.

It is an arithmetic number, because the mean of its divisors is an integer number (1671411).

Almost surely, 2^3342821 is an apocalyptic number.

It is an amenable number.

3342821 is a deficient number, since it is larger than the sum of its proper divisors (1).

3342821 is an equidigital number, since it uses as much as digits as its factorization.

3342821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 23.

The square root of 3342821 is about 1828.3383166143. The cubic root of 3342821 is about 149.5217508798.

The spelling of 3342821 in words is "three million, three hundred forty-two thousand, eight hundred twenty-one".