2140242 has 32 divisors (see below), whose sum is σ = 4814208. Its totient is φ = 629376.

The previous prime is 2140231. The next prime is 2140253. The reversal of 2140242 is 2420412.

It is an interprime number because it is at equal distance from previous prime (2140231) and next prime (2140253).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1198 + ... + 2390.

It is an arithmetic number, because the mean of its divisors is an integer number (150444).

2^2140242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2140242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2407104).

2140242 is an abundant number, since it is smaller than the sum of its proper divisors (2673966).

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

2140242 is a wasteful number, since it uses less digits than its factorization.

2140242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1234.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 2140242 is about 1462.9565953917. The cubic root of 2140242 is about 128.8707316321.

Adding to 2140242 its reverse (2420412), we get a palindrome (4560654).

The spelling of 2140242 in words is "two million, one hundred forty thousand, two hundred forty-two".