134407321 has 8 divisors (see below), whose sum is σ = 142468200. Its totient is φ = 126363648.

The previous prime is 134407319. The next prime is 134407337. The reversal of 134407321 is 123704431.

It can be written as a sum of positive squares in 4 ways, for example, as 61544025 + 72863296 = 7845^2 + 8536^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 134407321 - 2¹ = 134407319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134405321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14065 + ... + 21601.

It is an arithmetic number, because the mean of its divisors is an integer number (17808525).

Almost surely, 2^134407321 is an apocalyptic number.

It is an amenable number.

134407321 is a deficient number, since it is larger than the sum of its proper divisors (8060879).

134407321 is a wasteful number, since it uses less digits than its factorization.

134407321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8603.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 134407321 is about 11593.4171407743. The cubic root of 134407321 is about 512.2409665405.

The spelling of 134407321 in words is "one hundred thirty-four million, four hundred seven thousand, three hundred twenty-one".