42188802289 has 2 divisors, whose sum is σ = 42188802290. Its totient is φ = 42188802288.

The previous prime is 42188802269. The next prime is 42188802347. The reversal of 42188802289 is 98220888124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41619264064 + 569538225 = 204008^2 + 23865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42188802289 is a prime.

It is not a weakly prime, because it can be changed into another prime (42188802259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21094401144 + 21094401145.

It is an arithmetic number, because the mean of its divisors is an integer number (21094401145).

Almost surely, 2^42188802289 is an apocalyptic number.

It is an amenable number.

42188802289 is a deficient number, since it is larger than the sum of its proper divisors (1).

42188802289 is an equidigital number, since it uses as much as digits as its factorization.

42188802289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1179648, while the sum is 52.

The spelling of 42188802289 in words is "forty-two billion, one hundred eighty-eight million, eight hundred two thousand, two hundred eighty-nine".