2622421 has 4 divisors (see below), whose sum is σ = 2625952. Its totient is φ = 2618892.

The previous prime is 2622419. The next prime is 2622427. The reversal of 2622421 is 1242262.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2622421 - 2¹ = 2622419 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2622427) 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, 171 + ... + 2296.

It is an arithmetic number, because the mean of its divisors is an integer number (656488).

2^2622421 is an apocalyptic number.

It is an amenable number.

2622421 is a deficient number, since it is larger than the sum of its proper divisors (3531).

2622421 is a wasteful number, since it uses less digits than its factorization.

2622421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3530.

The product of its digits is 384, while the sum is 19.

The square root of 2622421 is about 1619.3890823394. The cubic root of 2622421 is about 137.9010177275.

Adding to 2622421 its reverse (1242262), we get a palindrome (3864683).

The spelling of 2622421 in words is "two million, six hundred twenty-two thousand, four hundred twenty-one".