1312026426 has 12 divisors (see below), whose sum is σ = 2842723962. Its totient is φ = 437342136.

The previous prime is 1312026383. The next prime is 1312026427. The reversal of 1312026426 is 6246202131.

1312026426 is a `hidden beast` number, since 1 + 3 + 12 + 0 + 2 + 642 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1209996225 + 102030201 = 34785^2 + 10101^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1312026426.

It is not an unprimeable number, because it can be changed into a prime (1312026427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36445161 + ... + 36445196.

Almost surely, 2^1312026426 is an apocalyptic number.

1312026426 is an abundant number, since it is smaller than the sum of its proper divisors (1530697536).

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

1312026426 is a wasteful number, since it uses less digits than its factorization.

1312026426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72890365 (or 72890362 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1312026426 is about 36221.9053336513. The cubic root of 1312026426 is about 1094.7480849151.

Adding to 1312026426 its reverse (6246202131), we get a palindrome (7558228557).

The spelling of 1312026426 in words is "one billion, three hundred twelve million, twenty-six thousand, four hundred twenty-six".