1266830421 has 8 divisors (see below), whose sum is σ = 1695341184. Its totient is φ = 841436640.

The previous prime is 1266830401. The next prime is 1266830447. The reversal of 1266830421 is 1240386621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1266830421 - 2¹³ = 1266822229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1266830401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778296 + ... + 779921.

It is an arithmetic number, because the mean of its divisors is an integer number (211917648).

Almost surely, 2^1266830421 is an apocalyptic number.

It is an amenable number.

1266830421 is a deficient number, since it is larger than the sum of its proper divisors (428510763).

1266830421 is a wasteful number, since it uses less digits than its factorization.

1266830421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1558491.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 1266830421 is about 35592.5613155333. The cubic root of 1266830421 is about 1082.0304797101.

The spelling of 1266830421 in words is "one billion, two hundred sixty-six million, eight hundred thirty thousand, four hundred twenty-one".