1269430055 has 4 divisors (see below), whose sum is σ = 1523316072. Its totient is φ = 1015544040.

The previous prime is 1269430049. The next prime is 1269430073. The reversal of 1269430055 is 5500349621.

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

It is not a de Polignac number, because 1269430055 - 2¹⁴ = 1269413671 is a prime.

It is a super-3 number, since 3×1269430055³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1269429997 and 1269430024.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 126943001 + ... + 126943010.

It is an arithmetic number, because the mean of its divisors is an integer number (380829018).

Almost surely, 2^1269430055 is an apocalyptic number.

1269430055 is a deficient number, since it is larger than the sum of its proper divisors (253886017).

1269430055 is an equidigital number, since it uses as much as digits as its factorization.

1269430055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253886016.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 1269430055 is about 35629.0619438682. The cubic root of 1269430055 is about 1082.7701107566.

Adding to 1269430055 its reverse (5500349621), we get a palindrome (6769779676).

The spelling of 1269430055 in words is "one billion, two hundred sixty-nine million, four hundred thirty thousand, fifty-five".