1291426296 has 32 divisors (see below), whose sum is σ = 3253219200. Its totient is φ = 427188320.

The previous prime is 1291426291. The next prime is 1291426307. The reversal of 1291426296 is 6926241921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1291426291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202236 + ... + 208523.

It is an arithmetic number, because the mean of its divisors is an integer number (101663100).

Almost surely, 2^1291426296 is an apocalyptic number.

It is an amenable number.

1291426296 is an abundant number, since it is smaller than the sum of its proper divisors (1961792904).

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

1291426296 is a wasteful number, since it uses less digits than its factorization.

1291426296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410899 (or 410895 counting only the distinct ones).

The product of its digits is 93312, while the sum is 42.

The square root of 1291426296 is about 35936.4201889949. The cubic root of 1291426296 is about 1088.9882866149.

The spelling of 1291426296 in words is "one billion, two hundred ninety-one million, four hundred twenty-six thousand, two hundred ninety-six".