729319942 has 16 divisors (see below), whose sum is σ = 1193048640. Its totient is φ = 332347392.

The previous prime is 729319879. The next prime is 729319951. The reversal of 729319942 is 249913927.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 729319892 and 729319901.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175483 + ... + 179590.

It is an arithmetic number, because the mean of its divisors is an integer number (74565540).

Almost surely, 2^729319942 is an apocalyptic number.

729319942 is a deficient number, since it is larger than the sum of its proper divisors (463728698).

729319942 is a wasteful number, since it uses less digits than its factorization.

729319942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355167.

The product of its digits is 244944, while the sum is 46.

The square root of 729319942 is about 27005.9242019228. The cubic root of 729319942 is about 900.1316441178.

The spelling of 729319942 in words is "seven hundred twenty-nine million, three hundred nineteen thousand, nine hundred forty-two".