42101021442 has 16 divisors (see below), whose sum is σ = 84329436672. Its totient is φ = 14012441520.

The previous prime is 42101021399. The next prime is 42101021447. The reversal of 42101021442 is 24412010124.

It is not an unprimeable number, because it can be changed into a prime (42101021447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5303778 + ... + 5311709.

It is an arithmetic number, because the mean of its divisors is an integer number (5270589792).

Almost surely, 2^42101021442 is an apocalyptic number.

42101021442 is an abundant number, since it is smaller than the sum of its proper divisors (42228415230).

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

42101021442 is a wasteful number, since it uses less digits than its factorization.

42101021442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10616153.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 42101021442 its reverse (24412010124), we get a palindrome (66513031566).

The spelling of 42101021442 in words is "forty-two billion, one hundred one million, twenty-one thousand, four hundred forty-two".