2140342 has 4 divisors (see below), whose sum is σ = 3210516. Its totient is φ = 1070170.

The previous prime is 2140337. The next prime is 2140349. The reversal of 2140342 is 2430412.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535084 + ... + 535087.

It is an arithmetic number, because the mean of its divisors is an integer number (802629).

2^2140342 is an apocalyptic number.

2140342 is a deficient number, since it is larger than the sum of its proper divisors (1070174).

2140342 is a wasteful number, since it uses less digits than its factorization.

2140342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070173.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2140342 is about 1462.9907723564. The cubic root of 2140342 is about 128.8727387061.

Adding to 2140342 its reverse (2430412), we get a palindrome (4570754).

The spelling of 2140342 in words is "two million, one hundred forty thousand, three hundred forty-two".