724747142 has 12 divisors (see below), whose sum is σ = 1264609980. Its totient is φ = 310605876.

The previous prime is 724747129. The next prime is 724747147. The reversal of 724747142 is 241747427.

It is a junction number, because it is equal to n+sod(n) for n = 724747096 and 724747105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724747147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3697592 + ... + 3697787.

It is an arithmetic number, because the mean of its divisors is an integer number (105384165).

Almost surely, 2^724747142 is an apocalyptic number.

724747142 is a deficient number, since it is larger than the sum of its proper divisors (539862838).

724747142 is a wasteful number, since it uses less digits than its factorization.

724747142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7395395 (or 7395388 counting only the distinct ones).

The product of its digits is 87808, while the sum is 38.

The square root of 724747142 is about 26921.1281710110. The cubic root of 724747142 is about 898.2464382508.

The spelling of 724747142 in words is "seven hundred twenty-four million, seven hundred forty-seven thousand, one hundred forty-two".