139130273 has 2 divisors, whose sum is σ = 139130274. Its totient is φ = 139130272.

The previous prime is 139130269. The next prime is 139130287. The reversal of 139130273 is 372031931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79423744 + 59706529 = 8912^2 + 7727^2 .

It is a cyclic number.

It is not a de Polignac number, because 139130273 - 2² = 139130269 is a prime.

It is not a weakly prime, because it can be changed into another prime (139133273) 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, 69565136 + 69565137.

It is an arithmetic number, because the mean of its divisors is an integer number (69565137).

Almost surely, 2^139130273 is an apocalyptic number.

It is an amenable number.

139130273 is a deficient number, since it is larger than the sum of its proper divisors (1).

139130273 is an equidigital number, since it uses as much as digits as its factorization.

139130273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 139130273 is about 11795.3496344958. The cubic root of 139130273 is about 518.1719253108.

The spelling of 139130273 in words is "one hundred thirty-nine million, one hundred thirty thousand, two hundred seventy-three".