1296235755 has 12 divisors (see below), whose sum is σ = 2246808720. Its totient is φ = 691325712.

The previous prime is 1296235751. The next prime is 1296235757. The reversal of 1296235755 is 5575326921.

1296235755 is a `hidden beast` number, since 1 + 296 + 2 + 357 + 5 + 5 = 666.

It is not a de Polignac number, because 1296235755 - 2² = 1296235751 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 28805239 = 1296235755 / (1 + 2 + 9 + 6 + 2 + 3 + 5 + 7 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1296235755.

It is not an unprimeable number, because it can be changed into a prime (1296235751) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14402575 + ... + 14402664.

It is an arithmetic number, because the mean of its divisors is an integer number (187234060).

Almost surely, 2^1296235755 is an apocalyptic number.

1296235755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1296235755 is a deficient number, since it is larger than the sum of its proper divisors (950572965).

1296235755 is a wasteful number, since it uses less digits than its factorization.

1296235755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28805250 (or 28805247 counting only the distinct ones).

The product of its digits is 567000, while the sum is 45.

The square root of 1296235755 is about 36003.2742261034. The cubic root of 1296235755 is about 1090.3384620714.

The spelling of 1296235755 in words is "one billion, two hundred ninety-six million, two hundred thirty-five thousand, seven hundred fifty-five".