2140487 has 16 divisors (see below), whose sum is σ = 2413152. Its totient is φ = 1889280.

The previous prime is 2140477. The next prime is 2140513. The reversal of 2140487 is 7840412.

It is not a de Polignac number, because 2140487 - 2⁸ = 2140231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25748 + ... + 25830.

It is an arithmetic number, because the mean of its divisors is an integer number (150822).

2^2140487 is an apocalyptic number.

2140487 is a deficient number, since it is larger than the sum of its proper divisors (272665).

2140487 is a wasteful number, since it uses less digits than its factorization.

2140487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 2140487 is about 1463.0403275371. The cubic root of 2140487 is about 128.8756488525.

Adding to 2140487 its reverse (7840412), we get a palindrome (9980899).

The spelling of 2140487 in words is "two million, one hundred forty thousand, four hundred eighty-seven".