134045721 has 12 divisors (see below), whose sum is σ = 193812372. Its totient is φ = 89275776.

The previous prime is 134045719. The next prime is 134045729. The reversal of 134045721 is 127540431.

It can be written as a sum of positive squares in 2 ways, for example, as 91470096 + 42575625 = 9564^2 + 6525^2 .

It is not a de Polignac number, because 134045721 - 2¹ = 134045719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134045729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3085 + ... + 16661.

It is an arithmetic number, because the mean of its divisors is an integer number (16151031).

Almost surely, 2^134045721 is an apocalyptic number.

It is an amenable number.

134045721 is a deficient number, since it is larger than the sum of its proper divisors (59766651).

134045721 is a wasteful number, since it uses less digits than its factorization.

134045721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14680 (or 14677 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 134045721 is about 11577.8115807781. The cubic root of 134045721 is about 511.7811882896.

The spelling of 134045721 in words is "one hundred thirty-four million, forty-five thousand, seven hundred twenty-one".