721862242 has 8 divisors (see below), whose sum is σ = 1107974736. Its totient is φ = 352537332.

The previous prime is 721862233. The next prime is 721862261. The reversal of 721862242 is 242268127.

721862242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 721862198 and 721862207.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4196788 + ... + 4196959.

It is an arithmetic number, because the mean of its divisors is an integer number (138496842).

Almost surely, 2^721862242 is an apocalyptic number.

721862242 is a deficient number, since it is larger than the sum of its proper divisors (386112494).

721862242 is a wasteful number, since it uses less digits than its factorization.

721862242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8393792.

The product of its digits is 21504, while the sum is 34.

The square root of 721862242 is about 26867.4941518557. The cubic root of 721862242 is about 897.0530118511.

The spelling of 721862242 in words is "seven hundred twenty-one million, eight hundred sixty-two thousand, two hundred forty-two".