140206207 has 2 divisors, whose sum is σ = 140206208. Its totient is φ = 140206206.

The previous prime is 140206163. The next prime is 140206223. The reversal of 140206207 is 702602041.

It is a strong prime.

It is an emirp because it is prime and its reverse (702602041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140206207 - 2²³ = 131817599 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140206267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70103103 + 70103104.

It is an arithmetic number, because the mean of its divisors is an integer number (70103104).

Almost surely, 2^140206207 is an apocalyptic number.

140206207 is a deficient number, since it is larger than the sum of its proper divisors (1).

140206207 is an equidigital number, since it uses as much as digits as its factorization.

140206207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 140206207 is about 11840.8701960624. The cubic root of 140206207 is about 519.5042205104.

Adding to 140206207 its reverse (702602041), we get a palindrome (842808248).

The spelling of 140206207 in words is "one hundred forty million, two hundred six thousand, two hundred seven".