1297134005 has 4 divisors (see below), whose sum is σ = 1556560812. Its totient is φ = 1037707200.

The previous prime is 1297133977. The next prime is 1297134037. The reversal of 1297134005 is 5004317921.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 297183121 + 999950884 = 17239^2 + 31622^2 .

It is not a de Polignac number, because 1297134005 - 2¹² = 1297129909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129713396 + ... + 129713405.

It is an arithmetic number, because the mean of its divisors is an integer number (389140203).

Almost surely, 2^1297134005 is an apocalyptic number.

It is an amenable number.

1297134005 is a deficient number, since it is larger than the sum of its proper divisors (259426807).

1297134005 is an equidigital number, since it uses as much as digits as its factorization.

1297134005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259426806.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 1297134005 is about 36015.7466256081. The cubic root of 1297134005 is about 1090.5902605005.

The spelling of 1297134005 in words is "one billion, two hundred ninety-seven million, one hundred thirty-four thousand, five".