42424424197 has 2 divisors, whose sum is σ = 42424424198. Its totient is φ = 42424424196.

The previous prime is 42424424177. The next prime is 42424424201. The reversal of 42424424197 is 79142442424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26435833281 + 15988590916 = 162591^2 + 126446^2 .

It is a cyclic number.

It is not a de Polignac number, because 42424424197 - 2³⁵ = 8064685829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42424424177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21212212098 + 21212212099.

It is an arithmetic number, because the mean of its divisors is an integer number (21212212099).

Almost surely, 2^42424424197 is an apocalyptic number.

It is an amenable number.

42424424197 is a deficient number, since it is larger than the sum of its proper divisors (1).

42424424197 is an equidigital number, since it uses as much as digits as its factorization.

42424424197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 516096, while the sum is 43.

The spelling of 42424424197 in words is "forty-two billion, four hundred twenty-four million, four hundred twenty-four thousand, one hundred ninety-seven".