1296352047 has 4 divisors (see below), whose sum is σ = 1728469400. Its totient is φ = 864234696.

The previous prime is 1296352039. The next prime is 1296352049. The reversal of 1296352047 is 7402536921.

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

It is not a de Polignac number, because 1296352047 - 2³ = 1296352039 is a prime.

It is a super-2 number, since 2×1296352047² = 3361057259522180418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1296351996 and 1296352014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1296352049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216058672 + ... + 216058677.

It is an arithmetic number, because the mean of its divisors is an integer number (432117350).

Almost surely, 2^1296352047 is an apocalyptic number.

1296352047 is a deficient number, since it is larger than the sum of its proper divisors (432117353).

1296352047 is an equidigital number, since it uses as much as digits as its factorization.

1296352047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432117352.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 1296352047 is about 36004.8892096615. The cubic root of 1296352047 is about 1090.3710677268.

Adding to 1296352047 its reverse (7402536921), we get a palindrome (8698888968).

The spelling of 1296352047 in words is "one billion, two hundred ninety-six million, three hundred fifty-two thousand, forty-seven".