7139273 has 2 divisors, whose sum is σ = 7139274. Its totient is φ = 7139272.

The previous prime is 7139219. The next prime is 7139287. The reversal of 7139273 is 3729317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6901129 + 238144 = 2627^2 + 488^2 .

It is an emirp because it is prime and its reverse (3729317) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7139273 is a prime.

It is not a weakly prime, because it can be changed into another prime (7138273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569636 + 3569637.

It is an arithmetic number, because the mean of its divisors is an integer number (3569637).

Almost surely, 2^7139273 is an apocalyptic number.

It is an amenable number.

7139273 is a deficient number, since it is larger than the sum of its proper divisors (1).

7139273 is an equidigital number, since it uses as much as digits as its factorization.

7139273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 32.

The square root of 7139273 is about 2671.9418032584. The cubic root of 7139273 is about 192.5534612856.

The spelling of 7139273 in words is "seven million, one hundred thirty-nine thousand, two hundred seventy-three".