140030221 has 2 divisors, whose sum is σ = 140030222. Its totient is φ = 140030220.

The previous prime is 140030167. The next prime is 140030227. The reversal of 140030221 is 122030041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120758121 + 19272100 = 10989^2 + 4390^2 .

It is a cyclic number.

It is not a de Polignac number, because 140030221 - 2²⁷ = 5812493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140030227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70015110 + 70015111.

It is an arithmetic number, because the mean of its divisors is an integer number (70015111).

Almost surely, 2^140030221 is an apocalyptic number.

It is an amenable number.

140030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

140030221 is an equidigital number, since it uses as much as digits as its factorization.

140030221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 140030221 is about 11833.4365676248. The cubic root of 140030221 is about 519.2867699647.

Adding to 140030221 its reverse (122030041), we get a palindrome (262060262).

The spelling of 140030221 in words is "one hundred forty million, thirty thousand, two hundred twenty-one".