140138773 has 2 divisors, whose sum is σ = 140138774. Its totient is φ = 140138772.

The previous prime is 140138771. The next prime is 140138783. The reversal of 140138773 is 377831041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140138244 + 529 = 11838^2 + 23^2 .

It is a cyclic number.

It is not a de Polignac number, because 140138773 - 2¹ = 140138771 is a prime.

Together with 140138771, 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 (140138771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70069386 + 70069387.

It is an arithmetic number, because the mean of its divisors is an integer number (70069387).

Almost surely, 2^140138773 is an apocalyptic number.

It is an amenable number.

140138773 is a deficient number, since it is larger than the sum of its proper divisors (1).

140138773 is an equidigital number, since it uses as much as digits as its factorization.

140138773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 140138773 is about 11838.0223432801. The cubic root of 140138773 is about 519.4209197155.

The spelling of 140138773 in words is "one hundred forty million, one hundred thirty-eight thousand, seven hundred seventy-three".