43000072 has 16 divisors (see below), whose sum is σ = 85368060. Its totient is φ = 20235264.

The previous prime is 43000063. The next prime is 43000081. The reversal of 43000072 is 27000034.

It is an interprime number because it is at equal distance from previous prime (43000063) and next prime (43000081).

It can be written as a sum of positive squares in 2 ways, for example, as 42693156 + 306916 = 6534^2 + 554^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157953 + ... + 158224.

Almost surely, 2^43000072 is an apocalyptic number.

It is an amenable number.

43000072 is a deficient number, since it is larger than the sum of its proper divisors (42367988).

43000072 is a wasteful number, since it uses less digits than its factorization.

43000072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316200 (or 316196 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 43000072 is about 6557.4440142482. Note that the first 3 decimals coincide. The cubic root of 43000072 is about 350.3400015771.

The spelling of 43000072 in words is "forty-three million, seventy-two", and thus it is an aban number and an uban number.