42143243142 has 128 divisors (see below), whose sum is σ = 113929804800. Its totient is φ = 10036247040.

The previous prime is 42143243099. The next prime is 42143243147. The reversal of 42143243142 is 24134234124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42143243147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 871348 + ... + 918440.

It is an arithmetic number, because the mean of its divisors is an integer number (890076600).

Almost surely, 2^42143243142 is an apocalyptic number.

42143243142 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 42143243142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56964902400).

42143243142 is an abundant number, since it is smaller than the sum of its proper divisors (71786561658).

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

42143243142 is a wasteful number, since it uses less digits than its factorization.

42143243142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47278.

The product of its digits is 18432, while the sum is 30.

Adding to 42143243142 its reverse (24134234124), we get a palindrome (66277477266).

The spelling of 42143243142 in words is "forty-two billion, one hundred forty-three million, two hundred forty-three thousand, one hundred forty-two".