1266303420 has 72 divisors (see below), whose sum is σ = 3847552800. Its totient is φ = 337115520.

The previous prime is 1266303413. The next prime is 1266303421. The reversal of 1266303420 is 243036621.

1266303420 is a `hidden beast` number, since 1 + 2 + 6 + 630 + 3 + 4 + 20 = 666.

1266303420 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266303421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108006 + ... + 119154.

Almost surely, 2^1266303420 is an apocalyptic number.

1266303420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1266303420 is an abundant number, since it is smaller than the sum of its proper divisors (2581249380).

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

1266303420 is a wasteful number, since it uses less digits than its factorization.

1266303420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11795 (or 11790 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1266303420 is about 35585.1572990763. The cubic root of 1266303420 is about 1081.8804174693.

The spelling of 1266303420 in words is "one billion, two hundred sixty-six million, three hundred three thousand, four hundred twenty".