140609201 has 2 divisors, whose sum is σ = 140609202. Its totient is φ = 140609200.

The previous prime is 140609167. The next prime is 140609207. The reversal of 140609201 is 102906041.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139263601 + 1345600 = 11801^2 + 1160^2 .

It is a cyclic number.

It is not a de Polignac number, because 140609201 - 2⁶ = 140609137 is a prime.

It is not a weakly prime, because it can be changed into another prime (140609207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70304600 + 70304601.

It is an arithmetic number, because the mean of its divisors is an integer number (70304601).

Almost surely, 2^140609201 is an apocalyptic number.

It is an amenable number.

140609201 is a deficient number, since it is larger than the sum of its proper divisors (1).

140609201 is an equidigital number, since it uses as much as digits as its factorization.

140609201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 140609201 is about 11857.8750625903. The cubic root of 140609201 is about 520.0014805185.

The spelling of 140609201 in words is "one hundred forty million, six hundred nine thousand, two hundred one".