43791642 has 12 divisors (see below), whose sum is σ = 94881930. Its totient is φ = 14597208.

The previous prime is 43791641. The next prime is 43791647. The reversal of 43791642 is 24619734.

43791642 is a `hidden beast` number, since 4 + 3 + 7 + 9 + 1 + 642 = 666.

It can be written as a sum of positive squares in only one way, i.e., 36614601 + 7177041 = 6051^2 + 2679^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43791597 and 43791606.

It is not an unprimeable number, because it can be changed into a prime (43791641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1216417 + ... + 1216452.

Almost surely, 2^43791642 is an apocalyptic number.

43791642 is an abundant number, since it is smaller than the sum of its proper divisors (51090288).

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

43791642 is a wasteful number, since it uses less digits than its factorization.

43791642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2432877 (or 2432874 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 43791642 is about 6617.5253682929. The cubic root of 43791642 is about 352.4766968147.

The spelling of 43791642 in words is "forty-three million, seven hundred ninety-one thousand, six hundred forty-two".