3430421 has 4 divisors (see below), whose sum is σ = 3434700. Its totient is φ = 3426144.

The previous prime is 3430403. The next prime is 3430423. The reversal of 3430421 is 1240343.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1768900 + 1661521 = 1330^2 + 1289^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3430421 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 3430421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3430423) 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, 536 + ... + 2673.

It is an arithmetic number, because the mean of its divisors is an integer number (858675).

Almost surely, 2^3430421 is an apocalyptic number.

It is an amenable number.

3430421 is a deficient number, since it is larger than the sum of its proper divisors (4279).

3430421 is a wasteful number, since it uses less digits than its factorization.

3430421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 3430421 is about 1852.1395735743. The cubic root of 3430421 is about 150.8165982335.

Adding to 3430421 its reverse (1240343), we get a palindrome (4670764).

The spelling of 3430421 in words is "three million, four hundred thirty thousand, four hundred twenty-one".