2302421 has 4 divisors (see below), whose sum is σ = 2511744. Its totient is φ = 2093100.

The previous prime is 2302411. The next prime is 2302441. The reversal of 2302421 is 1242032.

Added to its reverse (1242032) it gives a triangular number (3544453 = T₂₆₆₂).

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 cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2302421 is a prime.

It is a super-2 number, since 2×2302421² = 10602284922482, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2302396 and 2302405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2302411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104645 + ... + 104666.

It is an arithmetic number, because the mean of its divisors is an integer number (627936).

2^2302421 is an apocalyptic number.

It is an amenable number.

2302421 is a deficient number, since it is larger than the sum of its proper divisors (209323).

2302421 is a wasteful number, since it uses less digits than its factorization.

2302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209322.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2302421 is about 1517.3730589410. The cubic root of 2302421 is about 132.0469109360.

Adding to 2302421 its reverse (1242032), we get a palindrome (3544453).

The spelling of 2302421 in words is "two million, three hundred two thousand, four hundred twenty-one".