3442921 has 2 divisors, whose sum is σ = 3442922. Its totient is φ = 3442920.

The previous prime is 3442913. The next prime is 3442949. The reversal of 3442921 is 1292443.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2088025 + 1354896 = 1445^2 + 1164^2 .

It is a cyclic number.

It is not a de Polignac number, because 3442921 - 2³ = 3442913 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3442991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1721460 + 1721461.

It is an arithmetic number, because the mean of its divisors is an integer number (1721461).

Almost surely, 2^3442921 is an apocalyptic number.

It is an amenable number.

3442921 is a deficient number, since it is larger than the sum of its proper divisors (1).

3442921 is an equidigital number, since it uses as much as digits as its factorization.

3442921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 25.

The square root of 3442921 is about 1855.5109808352. The cubic root of 3442921 is about 150.9995614215. Note that the first 3 decimals are identical.

The spelling of 3442921 in words is "three million, four hundred forty-two thousand, nine hundred twenty-one".