4087543642 has 48 divisors (see below), whose sum is σ = 7713439272. Its totient is φ = 1610219520.

The previous prime is 4087543619. The next prime is 4087543643. The reversal of 4087543642 is 2463457804.

It can be written as a sum of positive squares in 4 ways, for example, as 3040309321 + 1047234321 = 55139^2 + 32361^2 .

It is not an unprimeable number, because it can be changed into a prime (4087543643) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 300378 + ... + 313690.

Almost surely, 2^4087543642 is an apocalyptic number.

4087543642 is a deficient number, since it is larger than the sum of its proper divisors (3625895630).

4087543642 is a wasteful number, since it uses less digits than its factorization.

4087543642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13583 (or 13576 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 43.

The square root of 4087543642 is about 63933.9005692598. The cubic root of 4087543642 is about 1598.8981531013.

The spelling of 4087543642 in words is "four billion, eighty-seven million, five hundred forty-three thousand, six hundred forty-two".