2352421 has 4 divisors (see below), whose sum is σ = 2371072. Its totient is φ = 2333772.

The previous prime is 2352403. The next prime is 2352433. The reversal of 2352421 is 1242532.

2352421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a 4-Lehmer number, since φ(2352421) divides (2352421-1)⁴.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2352421 is a prime.

It is a super-2 number, since 2×2352421² = 11067769122482, which contains 22 as substring.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2352481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9135 + ... + 9388.

It is an arithmetic number, because the mean of its divisors is an integer number (592768).

2^2352421 is an apocalyptic number.

It is an amenable number.

2352421 is a deficient number, since it is larger than the sum of its proper divisors (18651).

2352421 is a wasteful number, since it uses less digits than its factorization.

2352421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18650.

The product of its digits is 480, while the sum is 19.

The square root of 2352421 is about 1533.7604115376. The cubic root of 2352421 is about 132.9959295492.

Adding to 2352421 its reverse (1242532), we get a palindrome (3594953).

The spelling of 2352421 in words is "two million, three hundred fifty-two thousand, four hundred twenty-one".