1265266434 has 16 divisors (see below), whose sum is σ = 2566175040. Its totient is φ = 415815120.

The previous prime is 1265266417. The next prime is 1265266439. The reversal of 1265266434 is 4346625621.

It is a junction number, because it is equal to n+sod(n) for n = 1265266392 and 1265266401.

It is not an unprimeable number, because it can be changed into a prime (1265266439) 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, 1484629 + ... + 1485480.

It is an arithmetic number, because the mean of its divisors is an integer number (160385940).

Almost surely, 2^1265266434 is an apocalyptic number.

1265266434 is an abundant number, since it is smaller than the sum of its proper divisors (1300908606).

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

1265266434 is a wasteful number, since it uses less digits than its factorization.

1265266434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970185.

The product of its digits is 207360, while the sum is 39.

The square root of 1265266434 is about 35570.5838299008. The cubic root of 1265266434 is about 1081.5850166432.

The spelling of 1265266434 in words is "one billion, two hundred sixty-five million, two hundred sixty-six thousand, four hundred thirty-four".