134221444 has 48 divisors (see below), whose sum is σ = 278691840. Its totient is φ = 55349280.

The previous prime is 134221441. The next prime is 134221457. The reversal of 134221444 is 444122431.

It is not an unprimeable number, because it can be changed into a prime (134221441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 207129 + ... + 207775.

It is an arithmetic number, because the mean of its divisors is an integer number (5806080).

Almost surely, 2^134221444 is an apocalyptic number.

134221444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134221444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139345920).

134221444 is an abundant number, since it is smaller than the sum of its proper divisors (144470396).

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

134221444 is a wasteful number, since it uses less digits than its factorization.

134221444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928 (or 926 counting only the distinct ones).

The product of its digits is 3072, while the sum is 25.

The square root of 134221444 is about 11585.3978783640. The cubic root of 134221444 is about 512.0047250947.

Adding to 134221444 its reverse (444122431), we get a palindrome (578343875).

The spelling of 134221444 in words is "one hundred thirty-four million, two hundred twenty-one thousand, four hundred forty-four".