3501421 has 16 divisors (see below), whose sum is σ = 4487040. Its totient is φ = 2652480.

The previous prime is 3501413. The next prime is 3501427. The reversal of 3501421 is 1241053.

It is a cyclic number.

It is not a de Polignac number, because 3501421 - 2³ = 3501413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3501395 and 3501404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3501427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2235 + ... + 3463.

It is an arithmetic number, because the mean of its divisors is an integer number (280440).

Almost surely, 2^3501421 is an apocalyptic number.

It is an amenable number.

3501421 is a deficient number, since it is larger than the sum of its proper divisors (985619).

3501421 is a wasteful number, since it uses less digits than its factorization.

3501421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 3501421 is about 1871.2084330721. The cubic root of 3501421 is about 151.8499933990.

Adding to 3501421 its reverse (1241053), we get a palindrome (4742474).

It can be divided in two parts, 350 and 1421, that added together give a palindrome (1771).

The spelling of 3501421 in words is "three million, five hundred one thousand, four hundred twenty-one".