42447868 has 12 divisors (see below), whose sum is σ = 74370240. Its totient is φ = 21199232.

The previous prime is 42447829. The next prime is 42447869. The reversal of 42447868 is 86874424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42447869) 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, 1996 + ... + 9427.

It is an arithmetic number, because the mean of its divisors is an integer number (6197520).

Almost surely, 2^42447868 is an apocalyptic number.

It is an amenable number.

42447868 is a deficient number, since it is larger than the sum of its proper divisors (31922372).

42447868 is a wasteful number, since it uses less digits than its factorization.

42447868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12356 (or 12354 counting only the distinct ones).

The product of its digits is 344064, while the sum is 43.

The square root of 42447868 is about 6515.2028364434. The cubic root of 42447868 is about 348.8338549574.

The spelling of 42447868 in words is "forty-two million, four hundred forty-seven thousand, eight hundred sixty-eight".