2142987784 has 32 divisors (see below), whose sum is σ = 4609094400. Its totient is φ = 915027840.

The previous prime is 2142987727. The next prime is 2142987787. The reversal of 2142987784 is 4877892412.

It is not an unprimeable number, because it can be changed into a prime (2142987787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55429 + ... + 85780.

It is an arithmetic number, because the mean of its divisors is an integer number (144034200).

Almost surely, 2^2142987784 is an apocalyptic number.

It is an amenable number.

2142987784 is an abundant number, since it is smaller than the sum of its proper divisors (2466106616).

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

2142987784 is a wasteful number, since it uses less digits than its factorization.

2142987784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141493 (or 141489 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 52.

The square root of 2142987784 is about 46292.4160527402. The cubic root of 2142987784 is about 1289.2581885721.

The spelling of 2142987784 in words is "two billion, one hundred forty-two million, nine hundred eighty-seven thousand, seven hundred eighty-four".