20000042143427 has 2 divisors, whose sum is σ = 20000042143428. Its totient is φ = 20000042143426.

The previous prime is 20000042143363. The next prime is 20000042143451. The reversal of 20000042143427 is 72434124000002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20000042143427 - 2⁶ = 20000042143363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20000042143427.

It is not a weakly prime, because it can be changed into another prime (20000042143457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000021071713 + 10000021071714.

It is an arithmetic number, because the mean of its divisors is an integer number (10000021071714).

Almost surely, 2^{20000042143427} is an apocalyptic number.

20000042143427 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000042143427 is an equidigital number, since it uses as much as digits as its factorization.

20000042143427 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 29.

Adding to 20000042143427 its reverse (72434124000002), we get a palindrome (92434166143429).

The spelling of 20000042143427 in words is "twenty trillion, forty-two million, one hundred forty-three thousand, four hundred twenty-seven".