420142243442503 has 2 divisors, whose sum is σ = 420142243442504. Its totient is φ = 420142243442502.

The previous prime is 420142243442501. The next prime is 420142243442569. The reversal of 420142243442503 is 305244342241024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420142243442503 - 2¹ = 420142243442501 is a prime.

Together with 420142243442501, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420142243442501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210071121721251 + 210071121721252.

It is an arithmetic number, because the mean of its divisors is an integer number (210071121721252).

Almost surely, 2^{420142243442503} is an apocalyptic number.

420142243442503 is a deficient number, since it is larger than the sum of its proper divisors (1).

420142243442503 is an equidigital number, since it uses as much as digits as its factorization.

420142243442503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 737280, while the sum is 40.

Adding to 420142243442503 its reverse (305244342241024), we get a palindrome (725386585683527).

The spelling of 420142243442503 in words is "four hundred twenty trillion, one hundred forty-two billion, two hundred forty-three million, four hundred forty-two thousand, five hundred three".