140210197 has 2 divisors, whose sum is σ = 140210198. Its totient is φ = 140210196.

The previous prime is 140210183. The next prime is 140210221. The reversal of 140210197 is 791012041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133033156 + 7177041 = 11534^2 + 2679^2 .

It is a cyclic number.

It is not a de Polignac number, because 140210197 - 2²³ = 131821589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140210107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70105098 + 70105099.

It is an arithmetic number, because the mean of its divisors is an integer number (70105099).

Almost surely, 2^140210197 is an apocalyptic number.

It is an amenable number.

140210197 is a deficient number, since it is larger than the sum of its proper divisors (1).

140210197 is an equidigital number, since it uses as much as digits as its factorization.

140210197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 140210197 is about 11841.0386791024. The cubic root of 140210197 is about 519.5091484953.

The spelling of 140210197 in words is "one hundred forty million, two hundred ten thousand, one hundred ninety-seven".