2145140 has 24 divisors (see below), whose sum is σ = 4532640. Its totient is φ = 852768.

The previous prime is 2145137. The next prime is 2145151. The reversal of 2145140 is 415412.

2145140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5471 + ... + 5849.

It is an arithmetic number, because the mean of its divisors is an integer number (188860).

2^2145140 is an apocalyptic number.

2145140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2145140 is an abundant number, since it is smaller than the sum of its proper divisors (2387500).

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

2145140 is a wasteful number, since it uses less digits than its factorization.

2145140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671 (or 669 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 2145140 is about 1464.6296460198. The cubic root of 2145140 is about 128.9689647512.

The spelling of 2145140 in words is "two million, one hundred forty-five thousand, one hundred forty".