43007644242 has 36 divisors (see below), whose sum is σ = 98987040906. Its totient is φ = 13492592640.

The previous prime is 43007644241. The next prime is 43007644247. The reversal of 43007644242 is 24244670034.

43007644242 is a `hidden beast` number, since 4 + 3 + 0 + 0 + 7 + 644 + 2 + 4 + 2 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 41197226841 + 1810417401 = 202971^2 + 42549^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43007644197 and 43007644206.

It is not an unprimeable number, because it can be changed into a prime (43007644241) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 4128559 + ... + 4138962.

Almost surely, 2^43007644242 is an apocalyptic number.

43007644242 is an abundant number, since it is smaller than the sum of its proper divisors (55979396664).

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

43007644242 is a wasteful number, since it uses less digits than its factorization.

43007644242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8267563 (or 8267543 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 36.

The spelling of 43007644242 in words is "forty-three billion, seven million, six hundred forty-four thousand, two hundred forty-two".