2140542 has 24 divisors (see below), whose sum is σ = 4684680. Its totient is φ = 706320.

The previous prime is 2140531. The next prime is 2140543. The reversal of 2140542 is 2450412.

2140542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140543) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1417 + ... + 2507.

It is an arithmetic number, because the mean of its divisors is an integer number (195195).

2^2140542 is an apocalyptic number.

2140542 is an abundant number, since it is smaller than the sum of its proper divisors (2544138).

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

2140542 is a wasteful number, since it uses less digits than its factorization.

2140542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1208 (or 1205 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2140542 is about 1463.0591238908. The cubic root of 2140542 is about 128.8767526667.

Adding to 2140542 its reverse (2450412), we get a palindrome (4590954).

The spelling of 2140542 in words is "two million, one hundred forty thousand, five hundred forty-two".