1230139759 has 2 divisors, whose sum is σ = 1230139760. Its totient is φ = 1230139758.

The previous prime is 1230139721. The next prime is 1230139783. The reversal of 1230139759 is 9579310321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1230139759 - 2⁹ = 1230139247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230139709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615069879 + 615069880.

It is an arithmetic number, because the mean of its divisors is an integer number (615069880).

Almost surely, 2^1230139759 is an apocalyptic number.

1230139759 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230139759 is an equidigital number, since it uses as much as digits as its factorization.

1230139759 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 1230139759 is about 35073.3482718716. The cubic root of 1230139759 is about 1071.4818490645.

The spelling of 1230139759 in words is "one billion, two hundred thirty million, one hundred thirty-nine thousand, seven hundred fifty-nine".