140242013 has 2 divisors, whose sum is σ = 140242014. Its totient is φ = 140242012.

The previous prime is 140241991. The next prime is 140242033. The reversal of 140242013 is 310242041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75568249 + 64673764 = 8693^2 + 8042^2 .

It is an emirp because it is prime and its reverse (310242041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140242013 - 2⁶ = 140241949 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140241982 and 140242000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140242033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70121006 + 70121007.

It is an arithmetic number, because the mean of its divisors is an integer number (70121007).

Almost surely, 2^140242013 is an apocalyptic number.

It is an amenable number.

140242013 is a deficient number, since it is larger than the sum of its proper divisors (1).

140242013 is an equidigital number, since it uses as much as digits as its factorization.

140242013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 140242013 is about 11842.3820661217. The cubic root of 140242013 is about 519.5484405804.

Adding to 140242013 its reverse (310242041), we get a palindrome (450484054).

The spelling of 140242013 in words is "one hundred forty million, two hundred forty-two thousand, thirteen".