140780197 has 2 divisors, whose sum is σ = 140780198. Its totient is φ = 140780196.

The previous prime is 140780191. The next prime is 140780249. The reversal of 140780197 is 791087041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97101316 + 43678881 = 9854^2 + 6609^2 .

It is a cyclic number.

It is not a de Polignac number, because 140780197 - 2¹¹ = 140778149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140780191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70390098 + 70390099.

It is an arithmetic number, because the mean of its divisors is an integer number (70390099).

Almost surely, 2^140780197 is an apocalyptic number.

It is an amenable number.

140780197 is a deficient number, since it is larger than the sum of its proper divisors (1).

140780197 is an equidigital number, since it uses as much as digits as its factorization.

140780197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 140780197 is about 11865.0831012682. The cubic root of 140780197 is about 520.2121878125.

The spelling of 140780197 in words is "one hundred forty million, seven hundred eighty thousand, one hundred ninety-seven".