42198193231 has 2 divisors, whose sum is σ = 42198193232. Its totient is φ = 42198193230.

The previous prime is 42198193201. The next prime is 42198193243. The reversal of 42198193231 is 13239189124.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42198193231 - 2²³ = 42189804623 is a prime.

It is a super-2 number, since 2×42198193231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42198193201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21099096615 + 21099096616.

It is an arithmetic number, because the mean of its divisors is an integer number (21099096616).

Almost surely, 2^42198193231 is an apocalyptic number.

42198193231 is a deficient number, since it is larger than the sum of its proper divisors (1).

42198193231 is an equidigital number, since it uses as much as digits as its factorization.

42198193231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 93312, while the sum is 43.

The spelling of 42198193231 in words is "forty-two billion, one hundred ninety-eight million, one hundred ninety-three thousand, two hundred thirty-one".