42447952 has 10 divisors (see below), whose sum is σ = 82242938. Its totient is φ = 21223968.

The previous prime is 42447947. The next prime is 42447953. The reversal of 42447952 is 25974424.

It can be written as a sum of positive squares in only one way, i.e., 26255376 + 16192576 = 5124^2 + 4024^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42447953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1326483 + ... + 1326514.

Almost surely, 2^42447952 is an apocalyptic number.

It is an amenable number.

42447952 is a deficient number, since it is larger than the sum of its proper divisors (39794986).

42447952 is a wasteful number, since it uses less digits than its factorization.

42447952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653005 (or 2652999 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 42447952 is about 6515.2092829010. The cubic root of 42447952 is about 348.8340850595.

The spelling of 42447952 in words is "forty-two million, four hundred forty-seven thousand, nine hundred fifty-two".