43009425842 has 16 divisors (see below), whose sum is σ = 68345894232. Its totient is φ = 20228824320.

The previous prime is 43009425839. The next prime is 43009425847. The reversal of 43009425842 is 24852490034.

It can be written as a sum of positive squares in 4 ways, for example, as 37845422521 + 5164003321 = 194539^2 + 71861^2 .

It is a super-2 number, since 2×43009425842² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 43009425842.

It is not an unprimeable number, because it can be changed into a prime (43009425847) 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, 276593 + ... + 403140.

Almost surely, 2^43009425842 is an apocalyptic number.

43009425842 is a deficient number, since it is larger than the sum of its proper divisors (25336468390).

43009425842 is a wasteful number, since it uses less digits than its factorization.

43009425842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681613.

The product of its (nonzero) digits is 276480, while the sum is 41.

The spelling of 43009425842 in words is "forty-three billion, nine million, four hundred twenty-five thousand, eight hundred forty-two".