7239500129 has 2 divisors, whose sum is σ = 7239500130. Its totient is φ = 7239500128.

The previous prime is 7239500123. The next prime is 7239500131. The reversal of 7239500129 is 9210059327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3690319504 + 3549180625 = 60748^2 + 59575^2 .

It is a cyclic number.

It is not a de Polignac number, because 7239500129 - 2⁴ = 7239500113 is a prime.

Together with 7239500131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 7239500092 and 7239500101.

It is not a weakly prime, because it can be changed into another prime (7239500123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3619750064 + 3619750065.

It is an arithmetic number, because the mean of its divisors is an integer number (3619750065).

Almost surely, 2^7239500129 is an apocalyptic number.

It is an amenable number.

7239500129 is a deficient number, since it is larger than the sum of its proper divisors (1).

7239500129 is an equidigital number, since it uses as much as digits as its factorization.

7239500129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 7239500129 is about 85085.2521239727. The cubic root of 7239500129 is about 1934.5035308416.

The spelling of 7239500129 in words is "seven billion, two hundred thirty-nine million, five hundred thousand, one hundred twenty-nine".