134630721 has 32 divisors (see below), whose sum is σ = 207546240. Its totient is φ = 86184000.

The previous prime is 134630711. The next prime is 134630723. The reversal of 134630721 is 127036431.

134630721 is a `hidden beast` number, since 1 + 3 + 4 + 630 + 7 + 21 = 666.

It is not a de Polignac number, because 134630721 - 2⁵ = 134630689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (134630723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69871 + ... + 71771.

It is an arithmetic number, because the mean of its divisors is an integer number (6485820).

Almost surely, 2^134630721 is an apocalyptic number.

It is an amenable number.

134630721 is a deficient number, since it is larger than the sum of its proper divisors (72915519).

134630721 is a wasteful number, since it uses less digits than its factorization.

134630721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014 (or 2008 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 134630721 is about 11603.0479185428. The cubic root of 134630721 is about 512.5246100417.

The spelling of 134630721 in words is "one hundred thirty-four million, six hundred thirty thousand, seven hundred twenty-one".