140455417 has 2 divisors, whose sum is σ = 140455418. Its totient is φ = 140455416.

The previous prime is 140455397. The next prime is 140455423. The reversal of 140455417 is 714554041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140446201 + 9216 = 11851^2 + 96^2 .

It is a cyclic number.

It is not a de Polignac number, because 140455417 - 2²⁷ = 6237689 is a prime.

It is not a weakly prime, because it can be changed into another prime (140455477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70227708 + 70227709.

It is an arithmetic number, because the mean of its divisors is an integer number (70227709).

Almost surely, 2^140455417 is an apocalyptic number.

It is an amenable number.

140455417 is a deficient number, since it is larger than the sum of its proper divisors (1).

140455417 is an equidigital number, since it uses as much as digits as its factorization.

140455417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 140455417 is about 11851.3888215686. The cubic root of 140455417 is about 519.8118365065.

The spelling of 140455417 in words is "one hundred forty million, four hundred fifty-five thousand, four hundred seventeen".