140030321 has 2 divisors, whose sum is σ = 140030322. Its totient is φ = 140030320.

The previous prime is 140030291. The next prime is 140030329. The reversal of 140030321 is 123030041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139240000 + 790321 = 11800^2 + 889^2 .

It is a cyclic number.

It is not a de Polignac number, because 140030321 - 2⁶ = 140030257 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140030296 and 140030305.

It is not a weakly prime, because it can be changed into another prime (140030329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70015160 + 70015161.

It is an arithmetic number, because the mean of its divisors is an integer number (70015161).

Almost surely, 2^140030321 is an apocalyptic number.

It is an amenable number.

140030321 is a deficient number, since it is larger than the sum of its proper divisors (1).

140030321 is an equidigital number, since it uses as much as digits as its factorization.

140030321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 140030321 is about 11833.4407929393. The cubic root of 140030321 is about 519.2868935777.

Adding to 140030321 its reverse (123030041), we get a palindrome (263060362).

The spelling of 140030321 in words is "one hundred forty million, thirty thousand, three hundred twenty-one".