3420543 has 12 divisors (see below), whose sum is σ = 5305560. Its totient is φ = 1954512.

The previous prime is 3420533. The next prime is 3420563. The reversal of 3420543 is 3450243.

It is a happy number.

It is not a de Polignac number, because 3420543 - 2¹⁰ = 3419519 is a prime.

It is a super-3 number, since 3×3420543³ (a number of 21 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (21).

3420543 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11488 + ... + 11781.

It is an arithmetic number, because the mean of its divisors is an integer number (442130).

Almost surely, 2^3420543 is an apocalyptic number.

3420543 is a deficient number, since it is larger than the sum of its proper divisors (1885017).

3420543 is a wasteful number, since it uses less digits than its factorization.

3420543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23286 (or 23279 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 3420543 is about 1849.4710054499. The cubic root of 3420543 is about 150.6716987599.

Adding to 3420543 its reverse (3450243), we get a palindrome (6870786).

The spelling of 3420543 in words is "three million, four hundred twenty thousand, five hundred forty-three".