1296437122 has 4 divisors (see below), whose sum is σ = 1944655686. Its totient is φ = 648218560.

The previous prime is 1296437059. The next prime is 1296437137. The reversal of 1296437122 is 2217346921.

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

It can be written as a sum of positive squares in only one way, i.e., 1293193521 + 3243601 = 35961^2 + 1801^2 .

It is a super-2 number, since 2×1296437122² = 3361498422599285768, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 324109279 + ... + 324109282.

Almost surely, 2^1296437122 is an apocalyptic number.

1296437122 is a deficient number, since it is larger than the sum of its proper divisors (648218564).

1296437122 is an equidigital number, since it uses as much as digits as its factorization.

1296437122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648218563.

The product of its digits is 36288, while the sum is 37.

The square root of 1296437122 is about 36006.0706270484. The cubic root of 1296437122 is about 1090.3949196039.

It can be divided in two parts, 12964 and 37122, that added together give a triangular number (50086 = T₃₁₆).

The spelling of 1296437122 in words is "one billion, two hundred ninety-six million, four hundred thirty-seven thousand, one hundred twenty-two".