140242117 has 2 divisors, whose sum is σ = 140242118. Its totient is φ = 140242116.

The previous prime is 140242087. The next prime is 140242121. The reversal of 140242117 is 711242041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138321121 + 1920996 = 11761^2 + 1386^2 .

It is a cyclic number.

It is not a de Polignac number, because 140242117 - 2¹⁹ = 139717829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140242147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70121058 + 70121059.

It is an arithmetic number, because the mean of its divisors is an integer number (70121059).

Almost surely, 2^140242117 is an apocalyptic number.

It is an amenable number.

140242117 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242117 is an equidigital number, since it uses as much as digits as its factorization.

140242117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 140242117 is about 11842.3864571293. The cubic root of 140242117 is about 519.5485690085.

Adding to 140242117 its reverse (711242041), we get a palindrome (851484158).

The spelling of 140242117 in words is "one hundred forty million, two hundred forty-two thousand, one hundred seventeen".