3451421 has 4 divisors (see below), whose sum is σ = 3535644. Its totient is φ = 3367200.

The previous prime is 3451417. The next prime is 3451423. The reversal of 3451421 is 1241543.

3451421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1241543 = 521 ⋅2383.

It can be written as a sum of positive squares in 2 ways, for example, as 1999396 + 1452025 = 1414^2 + 1205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3451421 - 2² = 3451417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3451393 and 3451402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3451423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42050 + ... + 42131.

It is an arithmetic number, because the mean of its divisors is an integer number (883911).

Almost surely, 2^3451421 is an apocalyptic number.

It is an amenable number.

3451421 is a deficient number, since it is larger than the sum of its proper divisors (84223).

3451421 is an equidigital number, since it uses as much as digits as its factorization.

3451421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84222.

The product of its digits is 480, while the sum is 20.

The square root of 3451421 is about 1857.8000430617. The cubic root of 3451421 is about 151.1237235764.

Adding to 3451421 its reverse (1241543), we get a palindrome (4692964).

The spelling of 3451421 in words is "three million, four hundred fifty-one thousand, four hundred twenty-one".