144730139 has 2 divisors, whose sum is σ = 144730140. Its totient is φ = 144730138.

The previous prime is 144730093. The next prime is 144730147. The reversal of 144730139 is 931037441.

It is a strong prime.

It is an emirp because it is prime and its reverse (931037441) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-144730139 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (144730169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72365069 + 72365070.

It is an arithmetic number, because the mean of its divisors is an integer number (72365070).

Almost surely, 2^144730139 is an apocalyptic number.

144730139 is a deficient number, since it is larger than the sum of its proper divisors (1).

144730139 is an equidigital number, since it uses as much as digits as its factorization.

144730139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 144730139 is about 12030.3839922091. The cubic root of 144730139 is about 525.0326679596.

The spelling of 144730139 in words is "one hundred forty-four million, seven hundred thirty thousand, one hundred thirty-nine".