43042161938 has 16 divisors (see below), whose sum is σ = 66394509720. Its totient is φ = 20912173056.

The previous prime is 43042161893. The next prime is 43042161983. The reversal of 43042161938 is 83916124034.

It is an interprime number because it is at equal distance from previous prime (43042161893) and next prime (43042161983).

It can be written as a sum of positive squares in 4 ways, for example, as 35333848729 + 7708313209 = 187973^2 + 87797^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43042161895 and 43042161904.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321281 + ... + 435092.

Almost surely, 2^43042161938 is an apocalyptic number.

43042161938 is a deficient number, since it is larger than the sum of its proper divisors (23352347782).

43042161938 is a wasteful number, since it uses less digits than its factorization.

43042161938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757181.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 43042161938 in words is "forty-three billion, forty-two million, one hundred sixty-one thousand, nine hundred thirty-eight".