1421266171 has 12 divisors (see below), whose sum is σ = 1540171920. Its totient is φ = 1310942880.

The previous prime is 1421266141. The next prime is 1421266219. The reversal of 1421266171 is 1716621241.

It is not a de Polignac number, because 1421266171 - 2¹¹ = 1421264123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421266111) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 312250 + ... + 316768.

It is an arithmetic number, because the mean of its divisors is an integer number (128347660).

Almost surely, 2^1421266171 is an apocalyptic number.

1421266171 is a deficient number, since it is larger than the sum of its proper divisors (118905749).

1421266171 is a wasteful number, since it uses less digits than its factorization.

1421266171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6406 (or 6393 counting only the distinct ones).

The product of its digits is 4032, while the sum is 31.

The square root of 1421266171 is about 37699.6839641926. The cubic root of 1421266171 is about 1124.3248415741.

The spelling of 1421266171 in words is "one billion, four hundred twenty-one million, two hundred sixty-six thousand, one hundred seventy-one".