3543421 has 8 divisors (see below), whose sum is σ = 4126464. Its totient is φ = 2979600.

The previous prime is 3543409. The next prime is 3543433. The reversal of 3543421 is 1243453.

It is an interprime number because it is at equal distance from previous prime (3543409) and next prime (3543433).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3543421 - 2⁵ = 3543389 is a prime.

It is an Ulam number.

It is a Duffinian number.

3543421 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3543392 and 3543401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3543451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4405 + ... + 5146.

It is an arithmetic number, because the mean of its divisors is an integer number (515808).

Almost surely, 2^3543421 is an apocalyptic number.

It is an amenable number.

3543421 is a deficient number, since it is larger than the sum of its proper divisors (583043).

3543421 is an equidigital number, since it uses as much as digits as its factorization.

3543421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9611.

The product of its digits is 1440, while the sum is 22.

The square root of 3543421 is about 1882.3976731817. The cubic root of 3543421 is about 152.4547352894.

Adding to 3543421 its reverse (1243453), we get a palindrome (4786874).

Subtracting from 3543421 its reverse (1243453), we obtain a cube (2299968 = 132³).

The spelling of 3543421 in words is "three million, five hundred forty-three thousand, four hundred twenty-one".