42197137191 has 60 divisors (see below), whose sum is σ = 69924085000. Its totient is φ = 25338756960.

The previous prime is 42197137127. The next prime is 42197137207. The reversal of 42197137191 is 19173179124.

It is a happy number.

42197137191 is a `hidden beast` number, since 4 + 2 + 197 + 1 + 371 + 91 = 666.

It is not a de Polignac number, because 42197137191 - 2⁶ = 42197137127 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42197137111) 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 in 59 ways as a sum of consecutive naturals, for example, 1048560 + ... + 1088058.

Almost surely, 2^42197137191 is an apocalyptic number.

42197137191 is a deficient number, since it is larger than the sum of its proper divisors (27726947809).

42197137191 is a wasteful number, since it uses less digits than its factorization.

42197137191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39642 (or 39622 counting only the distinct ones).

The product of its digits is 95256, while the sum is 45.

The spelling of 42197137191 in words is "forty-two billion, one hundred ninety-seven million, one hundred thirty-seven thousand, one hundred ninety-one".