2142143428509 has 12 divisors (see below), whose sum is σ = 3536236770976. Its totient is φ = 1224081959112.

The previous prime is 2142143428457. The next prime is 2142143428517. The reversal of 2142143428509 is 9058243412412.

2142143428509 is a `hidden beast` number, since 2 + 1 + 4 + 214 + 3 + 428 + 5 + 0 + 9 = 666.

It is not a de Polignac number, because 2142143428509 - 2¹⁹ = 2142142904221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2142143428519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17001138259 + ... + 17001138384.

Almost surely, 2^{2142143428509} is an apocalyptic number.

It is an amenable number.

2142143428509 is a deficient number, since it is larger than the sum of its proper divisors (1394093342467).

2142143428509 is a wasteful number, since it uses less digits than its factorization.

2142143428509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34002276656 (or 34002276653 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 2142143428509 in words is "two trillion, one hundred forty-two billion, one hundred forty-three million, four hundred twenty-eight thousand, five hundred nine".