42248666 has 16 divisors (see below), whose sum is σ = 67305600. Its totient is φ = 19833408.

The previous prime is 42248663. The next prime is 42248669. The reversal of 42248666 is 66684224.

It is an interprime number because it is at equal distance from previous prime (42248663) and next prime (42248669).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42248663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 626 + ... + 9213.

It is an arithmetic number, because the mean of its divisors is an integer number (4206600).

Almost surely, 2^42248666 is an apocalyptic number.

42248666 is a deficient number, since it is larger than the sum of its proper divisors (25056934).

42248666 is a wasteful number, since it uses less digits than its factorization.

42248666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9973.

The product of its digits is 110592, while the sum is 38.

The square root of 42248666 is about 6499.8973838054. The cubic root of 42248666 is about 348.2873227131.

The spelling of 42248666 in words is "forty-two million, two hundred forty-eight thousand, six hundred sixty-six".