726206242 has 4 divisors (see below), whose sum is σ = 1089309366. Its totient is φ = 363103120.

The previous prime is 726206237. The next prime is 726206249. The reversal of 726206242 is 242602627.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 700713841 + 25492401 = 26471^2 + 5049^2 .

It is not an unprimeable number, because it can be changed into a prime (726206249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 181551559 + ... + 181551562.

Almost surely, 2^726206242 is an apocalyptic number.

726206242 is a deficient number, since it is larger than the sum of its proper divisors (363103124).

726206242 is a wasteful number, since it uses less digits than its factorization.

726206242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363103123.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 726206242 is about 26948.2140781166. The cubic root of 726206242 is about 898.8488335507.

Adding to 726206242 its reverse (242602627), we get a palindrome (968808869).

The spelling of 726206242 in words is "seven hundred twenty-six million, two hundred six thousand, two hundred forty-two".