140118161 has 2 divisors, whose sum is σ = 140118162. Its totient is φ = 140118160.

The previous prime is 140118151. The next prime is 140118163. The reversal of 140118161 is 161811041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98386561 + 41731600 = 9919^2 + 6460^2 .

It is a cyclic number.

It is not a de Polignac number, because 140118161 - 2¹⁰ = 140117137 is a prime.

Together with 140118163, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140118163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70059080 + 70059081.

It is an arithmetic number, because the mean of its divisors is an integer number (70059081).

Almost surely, 2^140118161 is an apocalyptic number.

It is an amenable number.

140118161 is a deficient number, since it is larger than the sum of its proper divisors (1).

140118161 is an equidigital number, since it uses as much as digits as its factorization.

140118161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 140118161 is about 11837.1517266613. The cubic root of 140118161 is about 519.3954525096.

The spelling of 140118161 in words is "one hundred forty million, one hundred eighteen thousand, one hundred sixty-one".