42408042 has 8 divisors (see below), whose sum is σ = 84816096. Its totient is φ = 14136012.

The previous prime is 42408029. The next prime is 42408049. The reversal of 42408042 is 24080424.

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

42408042 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (42408049) 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, 3533998 + ... + 3534009.

It is an arithmetic number, because the mean of its divisors is an integer number (10602012).

Almost surely, 2^42408042 is an apocalyptic number.

42408042 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.

42408042 is a wasteful number, since it uses less digits than its factorization.

42408042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068012.

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

The square root of 42408042 is about 6512.1457293276. The cubic root of 42408042 is about 348.7247249832.

Adding to 42408042 its reverse (24080424), we get a palindrome (66488466).

The spelling of 42408042 in words is "forty-two million, four hundred eight thousand, forty-two".