42112200197 has 2 divisors, whose sum is σ = 42112200198. Its totient is φ = 42112200196.

The previous prime is 42112200133. The next prime is 42112200269. The reversal of 42112200197 is 79100221124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37338219361 + 4773980836 = 193231^2 + 69094^2 .

It is a cyclic number.

It is not a de Polignac number, because 42112200197 - 2⁶ = 42112200133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42112200107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21056100098 + 21056100099.

It is an arithmetic number, because the mean of its divisors is an integer number (21056100099).

Almost surely, 2^42112200197 is an apocalyptic number.

It is an amenable number.

42112200197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42112200197 is an equidigital number, since it uses as much as digits as its factorization.

42112200197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 42112200197 in words is "forty-two billion, one hundred twelve million, two hundred thousand, one hundred ninety-seven".