10139321 has 2 divisors, whose sum is σ = 10139322. Its totient is φ = 10139320.

The previous prime is 10139317. The next prime is 10139329. The reversal of 10139321 is 12393101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5812921 + 4326400 = 2411^2 + 2080^2 .

It is a cyclic number.

It is not a de Polignac number, because 10139321 - 2² = 10139317 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10139293 and 10139302.

It is not a weakly prime, because it can be changed into another prime (10139329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5069660 + 5069661.

It is an arithmetic number, because the mean of its divisors is an integer number (5069661).

Almost surely, 2^10139321 is an apocalyptic number.

It is an amenable number.

10139321 is a deficient number, since it is larger than the sum of its proper divisors (1).

10139321 is an equidigital number, since it uses as much as digits as its factorization.

10139321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 10139321 is about 3184.2300482220. The cubic root of 10139321 is about 216.4393848089.

The spelling of 10139321 in words is "ten million, one hundred thirty-nine thousand, three hundred twenty-one".