1266395424 has 48 divisors (see below), whose sum is σ = 3799188288. Its totient is φ = 361827072.

The previous prime is 1266395423. The next prime is 1266395437. The reversal of 1266395424 is 4245936621.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (1266395423) 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, 941587 + ... + 942930.

It is an arithmetic number, because the mean of its divisors is an integer number (79149756).

Almost surely, 2^1266395424 is an apocalyptic number.

1266395424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1266395424 is an abundant number, since it is smaller than the sum of its proper divisors (2532792864).

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

1266395424 is a wasteful number, since it uses less digits than its factorization.

1266395424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884537 (or 1884529 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The square root of 1266395424 is about 35586.4500055850. The cubic root of 1266395424 is about 1081.9066183818.

The spelling of 1266395424 in words is "one billion, two hundred sixty-six million, three hundred ninety-five thousand, four hundred twenty-four".