2142381756 has 24 divisors (see below), whose sum is σ = 4999844304. Its totient is φ = 713991040.

The previous prime is 2142381737. The next prime is 2142381781. The reversal of 2142381756 is 6571832412.

It is a congruent number.

It is an unprimeable number.

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, 63886 + ... + 91466.

It is an arithmetic number, because the mean of its divisors is an integer number (208326846).

Almost surely, 2^2142381756 is an apocalyptic number.

It is an amenable number.

2142381756 is an abundant number, since it is smaller than the sum of its proper divisors (2857462548).

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

2142381756 is a wasteful number, since it uses less digits than its factorization.

2142381756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34061 (or 34059 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 2142381756 is about 46285.8699388917. The cubic root of 2142381756 is about 1289.1366448360.

The spelling of 2142381756 in words is "two billion, one hundred forty-two million, three hundred eighty-one thousand, seven hundred fifty-six".