1297259712 has 210 divisors, whose sum is σ = 4474194252. Its totient is φ = 370573056.

The previous prime is 1297259693. The next prime is 1297259723. The reversal of 1297259712 is 2179527921.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 251463 + ... + 256569.

Almost surely, 2^1297259712 is an apocalyptic number.

1297259712 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1297259712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2237097126).

1297259712 is an abundant number, since it is smaller than the sum of its proper divisors (3176934540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1297259712 is an equidigital number, since it uses as much as digits as its factorization.

1297259712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5145 (or 5119 counting only the distinct ones).

The product of its digits is 158760, while the sum is 45.

The square root of 1297259712 is about 36017.4917505370. The cubic root of 1297259712 is about 1090.6254895519.

Subtracting 1297259712 from its reverse (2179527921), we obtain a square (882268209 = 29703²).

The spelling of 1297259712 in words is "one billion, two hundred ninety-seven million, two hundred fifty-nine thousand, seven hundred twelve".