2142074221540 has 36 divisors (see below), whose sum is σ = 4944473807868. Its totient is φ = 778936079680.

The previous prime is 2142074221537. The next prime is 2142074221571. The reversal of 2142074221540 is 451224702412.

It can be written as a sum of positive squares in 2 ways, for example, as 1107528921664 + 1034545299876 = 1052392^2 + 1017126^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2142074221496 and 2142074221505.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 442574899 + ... + 442579738.

It is an arithmetic number, because the mean of its divisors is an integer number (137346494663).

Almost surely, 2^{2142074221540} is an apocalyptic number.

2142074221540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2142074221540 is an abundant number, since it is smaller than the sum of its proper divisors (2802399586328).

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

2142074221540 is a wasteful number, since it uses less digits than its factorization.

2142074221540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885154668 (or 885154655 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 34.

Adding to 2142074221540 its reverse (451224702412), we get a palindrome (2593298923952).

The spelling of 2142074221540 in words is "two trillion, one hundred forty-two billion, seventy-four million, two hundred twenty-one thousand, five hundred forty".