730139 has 2 divisors, whose sum is σ = 730140. Its totient is φ = 730138.

The previous prime is 730111. The next prime is 730157. The reversal of 730139 is 931037.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 730139 - 2¹² = 726043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (730199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 365069 + 365070.

It is an arithmetic number, because the mean of its divisors is an integer number (365070).

2⁷³⁰¹³⁹ is an apocalyptic number.

730139 is a deficient number, since it is larger than the sum of its proper divisors (1).

730139 is an equidigital number, since it uses as much as digits as its factorization.

730139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 730139 is about 854.4817142572. The cubic root of 730139 is about 90.0468480378.

The spelling of 730139 in words is "seven hundred thirty thousand, one hundred thirty-nine".