43138612 has 12 divisors (see below), whose sum is σ = 82355616. Its totient is φ = 19608440.

The previous prime is 43138549. The next prime is 43138619. The reversal of 43138612 is 21683134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43138619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490168 + ... + 490255.

It is an arithmetic number, because the mean of its divisors is an integer number (6862968).

Almost surely, 2^43138612 is an apocalyptic number.

It is an amenable number.

43138612 is a deficient number, since it is larger than the sum of its proper divisors (39217004).

43138612 is a wasteful number, since it uses less digits than its factorization.

43138612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980438 (or 980436 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 43138612 is about 6567.9990864798. Note that the first 3 decimals coincide. The cubic root of 43138612 is about 350.7158464632.

The spelling of 43138612 in words is "forty-three million, one hundred thirty-eight thousand, six hundred twelve".