724972342 has 4 divisors (see below), whose sum is σ = 1087458516. Its totient is φ = 362486170.

The previous prime is 724972337. The next prime is 724972393. The reversal of 724972342 is 243279427.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 243279427 = 1481 ⋅164267.

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 = 724972295 and 724972304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181243084 + ... + 181243087.

It is an arithmetic number, because the mean of its divisors is an integer number (271864629).

Almost surely, 2^724972342 is an apocalyptic number.

724972342 is a deficient number, since it is larger than the sum of its proper divisors (362486174).

724972342 is a wasteful number, since it uses less digits than its factorization.

724972342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362486173.

The product of its digits is 169344, while the sum is 40.

The square root of 724972342 is about 26925.3104346078. The cubic root of 724972342 is about 898.3394657072.

The spelling of 724972342 in words is "seven hundred twenty-four million, nine hundred seventy-two thousand, three hundred forty-two".