2721422 has 8 divisors (see below), whose sum is σ = 4453272. Its totient is φ = 1237000.

The previous prime is 2721421. The next prime is 2721431. The reversal of 2721422 is 2241272.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2721422² = 14812275404168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2721394 and 2721403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721421) 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, 61829 + ... + 61872.

It is an arithmetic number, because the mean of its divisors is an integer number (556659).

2^2721422 is an apocalyptic number.

2721422 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2721422 is a deficient number, since it is larger than the sum of its proper divisors (1731850).

2721422 is a wasteful number, since it uses less digits than its factorization.

2721422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123714.

The product of its digits is 448, while the sum is 20.

The square root of 2721422 is about 1649.6733009902. The cubic root of 2721422 is about 139.6149624223.

Adding to 2721422 its reverse (2241272), we get a palindrome (4962694).

The spelling of 2721422 in words is "two million, seven hundred twenty-one thousand, four hundred twenty-two".