2151140 has 24 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 845408.

The previous prime is 2151139. The next prime is 2151157. The reversal of 2151140 is 411512.

2151140 = T₂₄₀ + T₂₄₁ + ... + T₂₉₈.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 269 + ... + 2091.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

2^2151140 is an apocalyptic number.

2151140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2151140 is an abundant number, since it is smaller than the sum of its proper divisors (2445340).

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

2151140 is a wasteful number, since it uses less digits than its factorization.

2151140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 2151140 is about 1466.6765151184. The cubic root of 2151140 is about 129.0890957528.

Adding to 2151140 its reverse (411512), we get a palindrome (2562652).

The spelling of 2151140 in words is "two million, one hundred fifty-one thousand, one hundred forty".