729342523 has 16 divisors (see below), whose sum is σ = 898487296. Its totient is φ = 576525600.

The previous prime is 729342521. The next prime is 729342527. The reversal of 729342523 is 325243927.

It is not a de Polignac number, because 729342523 - 2¹ = 729342521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (729342521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115498 + ... + 121648.

It is an arithmetic number, because the mean of its divisors is an integer number (56155456).

Almost surely, 2^729342523 is an apocalyptic number.

729342523 is a deficient number, since it is larger than the sum of its proper divisors (169144773).

729342523 is a wasteful number, since it uses less digits than its factorization.

729342523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7474.

The product of its digits is 90720, while the sum is 37.

The square root of 729342523 is about 27006.3422736216. The cubic root of 729342523 is about 900.1409338966.

It can be divided in two parts, 72934 and 2523, that added together give a palindrome (75457).

The spelling of 729342523 in words is "seven hundred twenty-nine million, three hundred forty-two thousand, five hundred twenty-three".