40280442 has 8 divisors (see below), whose sum is σ = 80560896. Its totient is φ = 13426812.

The previous prime is 40280419. The next prime is 40280453. The reversal of 40280442 is 24408204.

40280442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

40280442 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3356698 + ... + 3356709.

It is an arithmetic number, because the mean of its divisors is an integer number (10070112).

Almost surely, 2^40280442 is an apocalyptic number.

40280442 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40280442 is a wasteful number, since it uses less digits than its factorization.

40280442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6713412.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 40280442 is about 6346.6874824589. The cubic root of 40280442 is about 342.7925771773.

Adding to 40280442 its reverse (24408204), we get a palindrome (64688646).

The spelling of 40280442 in words is "forty million, two hundred eighty thousand, four hundred forty-two".