42643016 has 16 divisors (see below), whose sum is σ = 86106300. Its totient is φ = 19681344.

The previous prime is 42643009. The next prime is 42643019. The reversal of 42643016 is 61034624.

It can be written as a sum of positive squares in 2 ways, for example, as 42640900 + 2116 = 6530^2 + 46^2 .

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (42643019) 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 in 3 ways as a sum of consecutive naturals, for example, 204911 + ... + 205118.

Almost surely, 2^42643016 is an apocalyptic number.

It is an amenable number.

42643016 is an abundant number, since it is smaller than the sum of its proper divisors (43463284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42643016 is a wasteful number, since it uses less digits than its factorization.

42643016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410048 (or 410044 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 42643016 is about 6530.1620194295. The cubic root of 42643016 is about 349.3676090850.

The spelling of 42643016 in words is "forty-two million, six hundred forty-three thousand, sixteen".