2142779082 has 32 divisors (see below), whose sum is σ = 4411495872. Its totient is φ = 693548544.

The previous prime is 2142779071. The next prime is 2142779083. The reversal of 2142779082 is 2809772412.

It is not an unprimeable number, because it can be changed into a prime (2142779083) 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 15 ways as a sum of consecutive naturals, for example, 3888 + ... + 65579.

It is an arithmetic number, because the mean of its divisors is an integer number (137859246).

Almost surely, 2^2142779082 is an apocalyptic number.

2142779082 is an abundant number, since it is smaller than the sum of its proper divisors (2268716790).

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

2142779082 is a wasteful number, since it uses less digits than its factorization.

2142779082 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69622.

The product of its (nonzero) digits is 112896, while the sum is 42.

The square root of 2142779082 is about 46290.1618273257. The cubic root of 2142779082 is about 1289.2163343130.

The spelling of 2142779082 in words is "two billion, one hundred forty-two million, seven hundred seventy-nine thousand, eighty-two".