724197442 has 8 divisors (see below), whose sum is σ = 1086472332. Its totient is φ = 362040000.

The previous prime is 724197437. The next prime is 724197457. The reversal of 724197442 is 244791427.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 659411041 + 64786401 = 25679^2 + 8049^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 724197395 and 724197404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11859 + ... + 39862.

Almost surely, 2^724197442 is an apocalyptic number.

724197442 is a deficient number, since it is larger than the sum of its proper divisors (362274890).

724197442 is a wasteful number, since it uses less digits than its factorization.

724197442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58724.

The product of its digits is 112896, while the sum is 40.

The square root of 724197442 is about 26910.9167811132. The cubic root of 724197442 is about 898.0192827244.

The spelling of 724197442 in words is "seven hundred twenty-four million, one hundred ninety-seven thousand, four hundred forty-two".