1005412139 has 2 divisors, whose sum is σ = 1005412140. Its totient is φ = 1005412138.

The previous prime is 1005412073. The next prime is 1005412153. The reversal of 1005412139 is 9312145001.

It is a strong prime.

It is an emirp because it is prime and its reverse (9312145001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1005412139 is a prime.

It is not a weakly prime, because it can be changed into another prime (1005411139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502706069 + 502706070.

It is an arithmetic number, because the mean of its divisors is an integer number (502706070).

Almost surely, 2^1005412139 is an apocalyptic number.

1005412139 is a deficient number, since it is larger than the sum of its proper divisors (1).

1005412139 is an equidigital number, since it uses as much as digits as its factorization.

1005412139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1005412139 is about 31708.2345613880. The cubic root of 1005412139 is about 1001.8008015007.

The spelling of 1005412139 in words is "one billion, five million, four hundred twelve thousand, one hundred thirty-nine".