729911942 has 16 divisors (see below), whose sum is σ = 1156761600. Its totient is φ = 344467080.

The previous prime is 729911939. The next prime is 729911947. The reversal of 729911942 is 249119927.

It is a super-2 number, since 2×729911942² = 1065542886148422728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 729911893 and 729911902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (729911947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25142 + ... + 45737.

It is an arithmetic number, because the mean of its divisors is an integer number (72297600).

Almost surely, 2^729911942 is an apocalyptic number.

729911942 is a deficient number, since it is larger than the sum of its proper divisors (426849658).

729911942 is a wasteful number, since it uses less digits than its factorization.

729911942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71171.

The product of its digits is 81648, while the sum is 44.

The square root of 729911942 is about 27016.8825366658. The cubic root of 729911942 is about 900.3751283949.

The spelling of 729911942 in words is "seven hundred twenty-nine million, nine hundred eleven thousand, nine hundred forty-two".