197742371 has 2 divisors, whose sum is σ = 197742372. Its totient is φ = 197742370.

The previous prime is 197742343. The next prime is 197742383. The reversal of 197742371 is 173247791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 197742371 - 2¹⁰ = 197741347 is a prime.

It is not a weakly prime, because it can be changed into another prime (197742331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98871185 + 98871186.

It is an arithmetic number, because the mean of its divisors is an integer number (98871186).

Almost surely, 2^197742371 is an apocalyptic number.

197742371 is a deficient number, since it is larger than the sum of its proper divisors (1).

197742371 is an equidigital number, since it uses as much as digits as its factorization.

197742371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74088, while the sum is 41.

The square root of 197742371 is about 14062.0898517966. The cubic root of 197742371 is about 582.5947665817.

The spelling of 197742371 in words is "one hundred ninety-seven million, seven hundred forty-two thousand, three hundred seventy-one".