140238361 has 2 divisors, whose sum is σ = 140238362. Its totient is φ = 140238360.

The previous prime is 140238359. The next prime is 140238367. The reversal of 140238361 is 163832041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83612736 + 56625625 = 9144^2 + 7525^2 .

It is a cyclic number.

It is not a de Polignac number, because 140238361 - 2¹ = 140238359 is a prime.

Together with 140238359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (140238367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70119180 + 70119181.

It is an arithmetic number, because the mean of its divisors is an integer number (70119181).

Almost surely, 2^140238361 is an apocalyptic number.

It is an amenable number.

140238361 is a deficient number, since it is larger than the sum of its proper divisors (1).

140238361 is an equidigital number, since it uses as much as digits as its factorization.

140238361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 140238361 is about 11842.2278731664. The cubic root of 140238361 is about 519.5439307398.

The spelling of 140238361 in words is "one hundred forty million, two hundred thirty-eight thousand, three hundred sixty-one".