42263604197 has 2 divisors, whose sum is σ = 42263604198. Its totient is φ = 42263604196.

The previous prime is 42263604191. The next prime is 42263604209. The reversal of 42263604197 is 79140636224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42068471236 + 195132961 = 205106^2 + 13969^2 .

It is a cyclic number.

It is not a de Polignac number, because 42263604197 - 2⁴ = 42263604181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42263604191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21131802098 + 21131802099.

It is an arithmetic number, because the mean of its divisors is an integer number (21131802099).

Almost surely, 2^42263604197 is an apocalyptic number.

It is an amenable number.

42263604197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42263604197 is an equidigital number, since it uses as much as digits as its factorization.

42263604197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 42263604197 in words is "forty-two billion, two hundred sixty-three million, six hundred four thousand, one hundred ninety-seven".