729122 has 16 divisors (see below), whose sum is σ = 1149120. Its totient is φ = 346608.

The previous prime is 729073. The next prime is 729139. The reversal of 729122 is 221927.

It is an Ulam number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4283 + ... + 4449.

It is an arithmetic number, because the mean of its divisors is an integer number (71820).

2⁷²⁹¹²² is an apocalyptic number.

729122 is a deficient number, since it is larger than the sum of its proper divisors (419998).

729122 is a wasteful number, since it uses less digits than its factorization.

729122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265.

The product of its digits is 504, while the sum is 23.

The square root of 729122 is about 853.8864093075. The cubic root of 729122 is about 90.0050202961.

The spelling of 729122 in words is "seven hundred twenty-nine thousand, one hundred twenty-two".