42446816 has 12 divisors (see below), whose sum is σ = 83567232. Its totient is φ = 21223392.

The previous prime is 42446813. The next prime is 42446819. The reversal of 42446816 is 61864424.

It is an interprime number because it is at equal distance from previous prime (42446813) and next prime (42446819).

It is a super-3 number, since 3×42446816³ (a number of 24 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42446813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663200 + ... + 663263.

It is an arithmetic number, because the mean of its divisors is an integer number (6963936).

Almost surely, 2^42446816 is an apocalyptic number.

It is an amenable number.

42446816 is a deficient number, since it is larger than the sum of its proper divisors (41120416).

42446816 is a wasteful number, since it uses less digits than its factorization.

42446816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1326473 (or 1326465 counting only the distinct ones).

The product of its digits is 36864, while the sum is 35.

The square root of 42446816 is about 6515.1221016954. The cubic root of 42446816 is about 348.8309731775.

The spelling of 42446816 in words is "forty-two million, four hundred forty-six thousand, eight hundred sixteen".