2721342 has 32 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 828000.

The previous prime is 2721319. The next prime is 2721371. The reversal of 2721342 is 2431272.

2721342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10717 + ... + 10967.

It is an arithmetic number, because the mean of its divisors is an integer number (185220).

2^2721342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2721342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2963520).

2721342 is an abundant number, since it is smaller than the sum of its proper divisors (3205698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2721342 is a wasteful number, since it uses less digits than its factorization.

2721342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its digits is 672, while the sum is 21.

The square root of 2721342 is about 1649.6490535869. The cubic root of 2721342 is about 139.6135943499.

The spelling of 2721342 in words is "two million, seven hundred twenty-one thousand, three hundred forty-two".