43039442 has 4 divisors (see below), whose sum is σ = 64559166. Its totient is φ = 21519720.

The previous prime is 43039387. The next prime is 43039457. The reversal of 43039442 is 24493034.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23049601 + 19989841 = 4801^2 + 4471^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10759859 + ... + 10759862.

Almost surely, 2^43039442 is an apocalyptic number.

43039442 is a deficient number, since it is larger than the sum of its proper divisors (21519724).

43039442 is a wasteful number, since it uses less digits than its factorization.

43039442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21519723.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 43039442 is about 6560.4452592793. The cubic root of 43039442 is about 350.4468903787.

The spelling of 43039442 in words is "forty-three million, thirty-nine thousand, four hundred forty-two".