1297144926 has 72 divisors (see below), whose sum is σ = 3530562672. Its totient is φ = 336916800.

The previous prime is 1297144909. The next prime is 1297144939. The reversal of 1297144926 is 6294417921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 27295 + ... + 57786.

Almost surely, 2^1297144926 is an apocalyptic number.

1297144926 is an abundant number, since it is smaller than the sum of its proper divisors (2233417746).

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

1297144926 is a wasteful number, since it uses less digits than its factorization.

1297144926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85118 (or 85104 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 1297144926 is about 36015.8982395275. The cubic root of 1297144926 is about 1090.5933211719.

The spelling of 1297144926 in words is "one billion, two hundred ninety-seven million, one hundred forty-four thousand, nine hundred twenty-six".