2021342 has 4 divisors (see below), whose sum is σ = 3032016. Its totient is φ = 1010670.

The previous prime is 2021339. The next prime is 2021377. The reversal of 2021342 is 2431202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505334 + ... + 505337.

It is an arithmetic number, because the mean of its divisors is an integer number (758004).

2^2021342 is an apocalyptic number.

2021342 is a deficient number, since it is larger than the sum of its proper divisors (1010674).

2021342 is a wasteful number, since it uses less digits than its factorization.

2021342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010673.

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

The square root of 2021342 is about 1421.7390759208. The cubic root of 2021342 is about 126.4386742070.

Adding to 2021342 its reverse (2431202), we get a palindrome (4452544).

The spelling of 2021342 in words is "two million, twenty-one thousand, three hundred forty-two".