42210042 has 32 divisors (see below), whose sum is σ = 98537472. Its totient is φ = 11802864.

The previous prime is 42210023. The next prime is 42210053. The reversal of 42210042 is 24001224.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8718 + ... + 12665.

It is an arithmetic number, because the mean of its divisors is an integer number (3079296).

Almost surely, 2^42210042 is an apocalyptic number.

42210042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42210042 is an abundant number, since it is smaller than the sum of its proper divisors (56327430).

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

42210042 is a wasteful number, since it uses less digits than its factorization.

42210042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21442.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42210042 is about 6496.9255806112. The cubic root of 42210042 is about 348.1811548559.

Adding to 42210042 its reverse (24001224), we get a palindrome (66211266).

The spelling of 42210042 in words is "forty-two million, two hundred ten thousand, forty-two".