140718173 has 2 divisors, whose sum is σ = 140718174. Its totient is φ = 140718172.

The previous prime is 140718169. The next prime is 140718203. The reversal of 140718173 is 371817041.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71944324 + 68773849 = 8482^2 + 8293^2 .

It is a cyclic number.

It is not a de Polignac number, because 140718173 - 2² = 140718169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140718103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70359086 + 70359087.

It is an arithmetic number, because the mean of its divisors is an integer number (70359087).

Almost surely, 2^140718173 is an apocalyptic number.

It is an amenable number.

140718173 is a deficient number, since it is larger than the sum of its proper divisors (1).

140718173 is an equidigital number, since it uses as much as digits as its factorization.

140718173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 140718173 is about 11862.4690937427. The cubic root of 140718173 is about 520.1357793852.

The spelling of 140718173 in words is "one hundred forty million, seven hundred eighteen thousand, one hundred seventy-three".