42021044142 has 128 divisors (see below), whose sum is σ = 112043824128. Its totient is φ = 10170624000.

The previous prime is 42021044141. The next prime is 42021044161. The reversal of 42021044142 is 24144012024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021044141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 766768 + ... + 819740.

It is an arithmetic number, because the mean of its divisors is an integer number (875342376).

Almost surely, 2^42021044142 is an apocalyptic number.

42021044142 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 42021044142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56021912064).

42021044142 is an abundant number, since it is smaller than the sum of its proper divisors (70022779986).

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

42021044142 is a wasteful number, since it uses less digits than its factorization.

42021044142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53114.

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

Adding to 42021044142 its reverse (24144012024), we get a palindrome (66165056166).

The spelling of 42021044142 in words is "forty-two billion, twenty-one million, forty-four thousand, one hundred forty-two".