140357297 has 2 divisors, whose sum is σ = 140357298. Its totient is φ = 140357296.

The previous prime is 140357281. The next prime is 140357299. The reversal of 140357297 is 792753041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127938721 + 12418576 = 11311^2 + 3524^2 .

It is a cyclic number.

It is not a de Polignac number, because 140357297 - 2⁴ = 140357281 is a prime.

It is a super-2 number, since 2×140357297² = 39400341642292418, which contains 22 as substring.

Together with 140357299, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140357297.

It is not a weakly prime, because it can be changed into another prime (140357299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70178648 + 70178649.

It is an arithmetic number, because the mean of its divisors is an integer number (70178649).

Almost surely, 2^140357297 is an apocalyptic number.

It is an amenable number.

140357297 is a deficient number, since it is larger than the sum of its proper divisors (1).

140357297 is an equidigital number, since it uses as much as digits as its factorization.

140357297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 38.

The square root of 140357297 is about 11847.2484991242. The cubic root of 140357297 is about 519.6907641170.

The spelling of 140357297 in words is "one hundred forty million, three hundred fifty-seven thousand, two hundred ninety-seven".