140705837 has 2 divisors, whose sum is σ = 140705838. Its totient is φ = 140705836.

The previous prime is 140705813. The next prime is 140705843. The reversal of 140705837 is 738507041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 130279396 + 10426441 = 11414^2 + 3229^2 .

It is an emirp because it is prime and its reverse (738507041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140705837 - 2¹⁶ = 140640301 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 140705797 and 140705806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140705867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70352918 + 70352919.

It is an arithmetic number, because the mean of its divisors is an integer number (70352919).

Almost surely, 2^140705837 is an apocalyptic number.

It is an amenable number.

140705837 is a deficient number, since it is larger than the sum of its proper divisors (1).

140705837 is an equidigital number, since it uses as much as digits as its factorization.

140705837 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 140705837 is about 11861.9491231416. The cubic root of 140705837 is about 520.1205797789.

The spelling of 140705837 in words is "one hundred forty million, seven hundred five thousand, eight hundred thirty-seven".