4352421 has 16 divisors (see below), whose sum is σ = 6030144. Its totient is φ = 2790144.

The previous prime is 4352419. The next prime is 4352423. The reversal of 4352421 is 1242534.

It is an interprime number because it is at equal distance from previous prime (4352419) and next prime (4352423).

It is not a de Polignac number, because 4352421 - 2¹ = 4352419 is a prime.

It is a super-2 number, since 2×4352421² = 37887137122482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4352423) 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, 12370 + ... + 12716.

It is an arithmetic number, because the mean of its divisors is an integer number (376884).

Almost surely, 2^4352421 is an apocalyptic number.

It is an amenable number.

4352421 is a deficient number, since it is larger than the sum of its proper divisors (1677723).

4352421 is a wasteful number, since it uses less digits than its factorization.

4352421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500.

The product of its digits is 960, while the sum is 21.

The square root of 4352421 is about 2086.2456710560. The cubic root of 4352421 is about 163.2714685417.

Adding to 4352421 its reverse (1242534), we get a palindrome (5594955).

The spelling of 4352421 in words is "four million, three hundred fifty-two thousand, four hundred twenty-one".