43138952 has 8 divisors (see below), whose sum is σ = 80885550. Its totient is φ = 21569472.

The previous prime is 43138951. The next prime is 43138957. The reversal of 43138952 is 25983134.

It can be written as a sum of positive squares in only one way, i.e., 30846916 + 12292036 = 5554^2 + 3506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (43138951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2696177 + ... + 2696192.

Almost surely, 2^43138952 is an apocalyptic number.

It is an amenable number.

43138952 is a deficient number, since it is larger than the sum of its proper divisors (37746598).

43138952 is a wasteful number, since it uses less digits than its factorization.

43138952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392375 (or 5392371 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 43138952 is about 6568.0249695019. The cubic root of 43138952 is about 350.7167678579.

The spelling of 43138952 in words is "forty-three million, one hundred thirty-eight thousand, nine hundred fifty-two".