2721442 has 8 divisors (see below), whose sum is σ = 4128300. Its totient is φ = 1345344.

The previous prime is 2721437. The next prime is 2721443. The reversal of 2721442 is 2441272.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2692881 + 28561 = 1641^2 + 169^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2721443) 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, 7467 + ... + 7822.

2^2721442 is an apocalyptic number.

2721442 is a deficient number, since it is larger than the sum of its proper divisors (1406858).

2721442 is a wasteful number, since it uses less digits than its factorization.

2721442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15380.

The product of its digits is 896, while the sum is 22.

The square root of 2721442 is about 1649.6793627854. The cubic root of 2721442 is about 139.6153044362.

The spelling of 2721442 in words is "two million, seven hundred twenty-one thousand, four hundred forty-two".