42517203437939 has 2 divisors, whose sum is σ = 42517203437940. Its totient is φ = 42517203437938.

The previous prime is 42517203437923. The next prime is 42517203437959. The reversal of 42517203437939 is 93973430271524.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42517203437939 - 2⁴ = 42517203437923 is a prime.

It is not a weakly prime, because it can be changed into another prime (42517203437959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21258601718969 + 21258601718970.

It is an arithmetic number, because the mean of its divisors is an integer number (21258601718970).

Almost surely, 2^{42517203437939} is an apocalyptic number.

42517203437939 is a deficient number, since it is larger than the sum of its proper divisors (1).

42517203437939 is an equidigital number, since it uses as much as digits as its factorization.

42517203437939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 59.

The spelling of 42517203437939 in words is "forty-two trillion, five hundred seventeen billion, two hundred three million, four hundred thirty-seven thousand, nine hundred thirty-nine".