1024555139 has 2 divisors, whose sum is σ = 1024555140. Its totient is φ = 1024555138.

The previous prime is 1024555127. The next prime is 1024555159. The reversal of 1024555139 is 9315554201.

It is a weak prime.

It is an emirp because it is prime and its reverse (9315554201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1024555139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1024555099 and 1024555108.

It is not a weakly prime, because it can be changed into another prime (1024555159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512277569 + 512277570.

It is an arithmetic number, because the mean of its divisors is an integer number (512277570).

Almost surely, 2^1024555139 is an apocalyptic number.

1024555139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1024555139 is an equidigital number, since it uses as much as digits as its factorization.

1024555139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 1024555139 is about 32008.6728715828. The cubic root of 1024555139 is about 1008.1189505815.

The spelling of 1024555139 in words is "one billion, twenty-four million, five hundred fifty-five thousand, one hundred thirty-nine".