42072072503 has 2 divisors, whose sum is σ = 42072072504. Its totient is φ = 42072072502.

The previous prime is 42072072491. The next prime is 42072072541. The reversal of 42072072503 is 30527027024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42072072503 - 2⁴ = 42072072487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42072072503.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42072072593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21036036251 + 21036036252.

It is an arithmetic number, because the mean of its divisors is an integer number (21036036252).

Almost surely, 2^42072072503 is an apocalyptic number.

42072072503 is a deficient number, since it is larger than the sum of its proper divisors (1).

42072072503 is an equidigital number, since it uses as much as digits as its factorization.

42072072503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 32.

Adding to 42072072503 its reverse (30527027024), we get a palindrome (72599099527).

The spelling of 42072072503 in words is "forty-two billion, seventy-two million, seventy-two thousand, five hundred three".