197426101 has 2 divisors, whose sum is σ = 197426102. Its totient is φ = 197426100.

The previous prime is 197426059. The next prime is 197426107. The reversal of 197426101 is 101624791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179533201 + 17892900 = 13399^2 + 4230^2 .

It is a cyclic number.

It is not a de Polignac number, because 197426101 - 2⁹ = 197425589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197426107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98713050 + 98713051.

It is an arithmetic number, because the mean of its divisors is an integer number (98713051).

Almost surely, 2^197426101 is an apocalyptic number.

It is an amenable number.

197426101 is a deficient number, since it is larger than the sum of its proper divisors (1).

197426101 is an equidigital number, since it uses as much as digits as its factorization.

197426101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 197426101 is about 14050.8398681360. The cubic root of 197426101 is about 582.2839993155.

The spelling of 197426101 in words is "one hundred ninety-seven million, four hundred twenty-six thousand, one hundred one".