42446812 has 24 divisors (see below), whose sum is σ = 77490560. Its totient is φ = 20321280.

The previous prime is 42446809. The next prime is 42446813. The reversal of 42446812 is 21864424.

It is a super-3 number, since 3×42446812³ (a number of 24 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

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 in 7 ways as a sum of consecutive naturals, for example, 10264 + ... + 13792.

Almost surely, 2^42446812 is an apocalyptic number.

It is an amenable number.

42446812 is a deficient number, since it is larger than the sum of its proper divisors (35043748).

42446812 is a wasteful number, since it uses less digits than its factorization.

42446812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3661 (or 3659 counting only the distinct ones).

The product of its digits is 12288, while the sum is 31.

The square root of 42446812 is about 6515.1217947173. The cubic root of 42446812 is about 348.8309622200.

The spelling of 42446812 in words is "forty-two million, four hundred forty-six thousand, eight hundred twelve".