724545742 has 4 divisors (see below), whose sum is σ = 1086818616. Its totient is φ = 362272870.

The previous prime is 724545697. The next prime is 724545779. The reversal of 724545742 is 247545427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 247545427 = 2381 ⋅103967.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 724545695 and 724545704.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 181136434 + ... + 181136437.

It is an arithmetic number, because the mean of its divisors is an integer number (271704654).

Almost surely, 2^724545742 is an apocalyptic number.

724545742 is a deficient number, since it is larger than the sum of its proper divisors (362272874).

724545742 is a wasteful number, since it uses less digits than its factorization.

724545742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362272873.

The product of its digits is 313600, while the sum is 40.

The square root of 724545742 is about 26917.3873546450. The cubic root of 724545742 is about 898.1632259679.

The spelling of 724545742 in words is "seven hundred twenty-four million, five hundred forty-five thousand, seven hundred forty-two".