3502421 has 8 divisors (see below), whose sum is σ = 3786720. Its totient is φ = 3220272.

The previous prime is 3502409. The next prime is 3502427. The reversal of 3502421 is 1242053.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3502421 is a prime.

It is a super-2 number, since 2×3502421² = 24533905722482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3502421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3502427) 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, 5126 + ... + 5768.

It is an arithmetic number, because the mean of its divisors is an integer number (473340).

Almost surely, 2^3502421 is an apocalyptic number.

It is an amenable number.

3502421 is a deficient number, since it is larger than the sum of its proper divisors (284299).

3502421 is a wasteful number, since it uses less digits than its factorization.

3502421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 3502421 is about 1871.4756210007. The cubic root of 3502421 is about 151.8644480580.

Adding to 3502421 its reverse (1242053), we get a palindrome (4744474).

The spelling of 3502421 in words is "three million, five hundred two thousand, four hundred twenty-one".