134221143 has 24 divisors (see below), whose sum is σ = 212620032. Its totient is φ = 75062064.

The previous prime is 134221141. The next prime is 134221147. The reversal of 134221143 is 341122431.

It is not a de Polignac number, because 134221143 - 2¹ = 134221141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134221141) 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, 2805 + ... + 16622.

It is an arithmetic number, because the mean of its divisors is an integer number (8859168).

Almost surely, 2^134221143 is an apocalyptic number.

134221143 is a deficient number, since it is larger than the sum of its proper divisors (78398889).

134221143 is a wasteful number, since it uses less digits than its factorization.

134221143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19491 (or 19484 counting only the distinct ones).

The product of its digits is 576, while the sum is 21.

The square root of 134221143 is about 11585.3848878663. The cubic root of 134221143 is about 512.0043423602.

Adding to 134221143 its reverse (341122431), we get a palindrome (475343574).

The spelling of 134221143 in words is "one hundred thirty-four million, two hundred twenty-one thousand, one hundred forty-three".