2140402840 has 32 divisors (see below), whose sum is σ = 4827438000. Its totient is φ = 854111104.

The previous prime is 2140402819. The next prime is 2140402841. The reversal of 2140402840 is 482040412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140402841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47095 + ... + 80614.

Almost surely, 2^2140402840 is an apocalyptic number.

2140402840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2140402840 is an abundant number, since it is smaller than the sum of its proper divisors (2687035160).

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

2140402840 is a wasteful number, since it uses less digits than its factorization.

2140402840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128139 (or 128135 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 2140402840 is about 46264.4878929833. The cubic root of 2140402840 is about 1288.7395977940.

The spelling of 2140402840 in words is "two billion, one hundred forty million, four hundred two thousand, eight hundred forty".