720134 has 12 divisors (see below), whose sum is σ = 1110444. Its totient is φ = 350244.

The previous prime is 720133. The next prime is 720151. The reversal of 720134 is 431027.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4337 + ... + 4499.

It is an arithmetic number, because the mean of its divisors is an integer number (92537).

2⁷²⁰¹³⁴ is an apocalyptic number.

720134 is a deficient number, since it is larger than the sum of its proper divisors (390310).

720134 is a wasteful number, since it uses less digits than its factorization.

720134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 720134 is about 848.6070940076. The cubic root of 720134 is about 89.6336548477.

The spelling of 720134 in words is "seven hundred twenty thousand, one hundred thirty-four".