2140155 has 32 divisors (see below), whose sum is σ = 3870720. Its totient is φ = 1121760.

The previous prime is 2140139. The next prime is 2140157. The reversal of 2140155 is 5510412.

It is not a de Polignac number, because 2140155 - 2⁴ = 2140139 is a prime.

2140155 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2140157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11110 + ... + 11300.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2140155 is an apocalyptic number.

2140155 is a deficient number, since it is larger than the sum of its proper divisors (1730565).

2140155 is a wasteful number, since it uses less digits than its factorization.

2140155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 288 (or 282 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2140155 is about 1462.9268607829. The cubic root of 2140155 is about 128.8689854268.

Adding to 2140155 its reverse (5510412), we get a palindrome (7650567).

The spelling of 2140155 in words is "two million, one hundred forty thousand, one hundred fifty-five".