140342161 has 2 divisors, whose sum is σ = 140342162. Its totient is φ = 140342160.

The previous prime is 140342131. The next prime is 140342183. The reversal of 140342161 is 161243041.

140342161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (140342183) can be obtained adding 140342161 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123988225 + 16353936 = 11135^2 + 4044^2 .

It is a cyclic number.

It is not a de Polignac number, because 140342161 - 2¹¹ = 140340113 is a prime.

It is not a weakly prime, because it can be changed into another prime (140342101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70171080 + 70171081.

It is an arithmetic number, because the mean of its divisors is an integer number (70171081).

Almost surely, 2^140342161 is an apocalyptic number.

It is an amenable number.

140342161 is a deficient number, since it is larger than the sum of its proper divisors (1).

140342161 is an equidigital number, since it uses as much as digits as its factorization.

140342161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 140342161 is about 11846.6096837872. The cubic root of 140342161 is about 519.6720824564.

The spelling of 140342161 in words is "one hundred forty million, three hundred forty-two thousand, one hundred sixty-one".