42043008 has 64 divisors (see below), whose sum is σ = 127638720. Its totient is φ = 12011520.

The previous prime is 42043003. The next prime is 42043019. The reversal of 42043008 is 80034024.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×42043008² = 3535229043376128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (42043003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5133 + ... + 10508.

It is an arithmetic number, because the mean of its divisors is an integer number (1994355).

Almost surely, 2^42043008 is an apocalyptic number.

42043008 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

42043008 is an abundant number, since it is smaller than the sum of its proper divisors (85595712).

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

42043008 is a wasteful number, since it uses less digits than its factorization.

42043008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15665 (or 15653 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 42043008 is about 6484.0579886364. The cubic root of 42043008 is about 347.7212723892.

The spelling of 42043008 in words is "forty-two million, forty-three thousand, eight".