2142043021340 has 96 divisors (see below), whose sum is σ = 4798902024000. Its totient is φ = 801676359680.

The previous prime is 2142043021331. The next prime is 2142043021343. The reversal of 2142043021340 is 431203402412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142043021343) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3240947 + ... + 3845493.

It is an arithmetic number, because the mean of its divisors is an integer number (49988562750).

Almost surely, 2^{2142043021340} is an apocalyptic number.

2142043021340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2142043021340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2399451012000).

2142043021340 is an abundant number, since it is smaller than the sum of its proper divisors (2656859002660).

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

2142043021340 is a wasteful number, since it uses less digits than its factorization.

2142043021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 604775 (or 604773 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 2142043021340 its reverse (431203402412), we get a palindrome (2573246423752).

The spelling of 2142043021340 in words is "two trillion, one hundred forty-two billion, forty-three million, twenty-one thousand, three hundred forty".