42016240 has 40 divisors (see below), whose sum is σ = 111644640. Its totient is φ = 14405376.

The previous prime is 42016237. The next prime is 42016241. The reversal of 42016240 is 4261024.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42016241) 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 7 ways as a sum of consecutive naturals, for example, 36955 + ... + 38074.

It is an arithmetic number, because the mean of its divisors is an integer number (2791116).

Almost surely, 2^42016240 is an apocalyptic number.

42016240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42016240 is an abundant number, since it is smaller than the sum of its proper divisors (69628400).

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

42016240 is a wasteful number, since it uses less digits than its factorization.

42016240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75049 (or 75043 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 42016240 is about 6481.9935205151. The cubic root of 42016240 is about 347.6474608366.

Adding to 42016240 its reverse (4261024), we get a palindrome (46277264).

The spelling of 42016240 in words is "forty-two million, sixteen thousand, two hundred forty".