134401321 has 4 divisors (see below), whose sum is σ = 137679444. Its totient is φ = 131123200.

The previous prime is 134401313. The next prime is 134401339. The reversal of 134401321 is 123104431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33177600 + 101223721 = 5760^2 + 10061^2 .

It is a cyclic number.

It is not a de Polignac number, because 134401321 - 2³ = 134401313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134401391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1639000 + ... + 1639081.

It is an arithmetic number, because the mean of its divisors is an integer number (34419861).

Almost surely, 2^134401321 is an apocalyptic number.

It is an amenable number.

134401321 is a deficient number, since it is larger than the sum of its proper divisors (3278123).

134401321 is an equidigital number, since it uses as much as digits as its factorization.

134401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3278122.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 134401321 is about 11593.1583703493. The cubic root of 134401321 is about 512.2333442088.

Adding to 134401321 its reverse (123104431), we get a palindrome (257505752).

The spelling of 134401321 in words is "one hundred thirty-four million, four hundred one thousand, three hundred twenty-one".