140115161 has 2 divisors, whose sum is σ = 140115162. Its totient is φ = 140115160.

The previous prime is 140115097. The next prime is 140115169. The reversal of 140115161 is 161511041.

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., 75151561 + 64963600 = 8669^2 + 8060^2 .

It is a cyclic number.

It is not a de Polignac number, because 140115161 - 2⁶ = 140115097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (140115169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70057580 + 70057581.

It is an arithmetic number, because the mean of its divisors is an integer number (70057581).

Almost surely, 2^140115161 is an apocalyptic number.

It is an amenable number.

140115161 is a deficient number, since it is larger than the sum of its proper divisors (1).

140115161 is an equidigital number, since it uses as much as digits as its factorization.

140115161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 20.

The square root of 140115161 is about 11837.0250063097. The cubic root of 140115161 is about 519.3917456442.

The spelling of 140115161 in words is "one hundred forty million, one hundred fifteen thousand, one hundred sixty-one".