140123941 has 2 divisors, whose sum is σ = 140123942. Its totient is φ = 140123940.

The previous prime is 140123939. The next prime is 140123957. The reversal of 140123941 is 149321041.

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., 136399041 + 3724900 = 11679^2 + 1930^2 .

It is an emirp because it is prime and its reverse (149321041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140123941 - 2¹ = 140123939 is a prime.

Together with 140123939, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140123341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70061970 + 70061971.

It is an arithmetic number, because the mean of its divisors is an integer number (70061971).

Almost surely, 2^140123941 is an apocalyptic number.

It is an amenable number.

140123941 is a deficient number, since it is larger than the sum of its proper divisors (1).

140123941 is an equidigital number, since it uses as much as digits as its factorization.

140123941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140123941 is about 11837.3958707141. The cubic root of 140123941 is about 519.4025942544.

Adding to 140123941 its reverse (149321041), we get a palindrome (289444982).

The spelling of 140123941 in words is "one hundred forty million, one hundred twenty-three thousand, nine hundred forty-one".