140221307 has 2 divisors, whose sum is σ = 140221308. Its totient is φ = 140221306.

The previous prime is 140221297. The next prime is 140221309. The reversal of 140221307 is 703122041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140221307 - 2¹⁴ = 140204923 is a prime.

Together with 140221309, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140221309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70110653 + 70110654.

It is an arithmetic number, because the mean of its divisors is an integer number (70110654).

Almost surely, 2^140221307 is an apocalyptic number.

140221307 is a deficient number, since it is larger than the sum of its proper divisors (1).

140221307 is an equidigital number, since it uses as much as digits as its factorization.

140221307 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 140221307 is about 11841.5078009517. The cubic root of 140221307 is about 519.5228697850.

Adding to 140221307 its reverse (703122041), we get a palindrome (843343348).

The spelling of 140221307 in words is "one hundred forty million, two hundred twenty-one thousand, three hundred seven".