721200002 has 4 divisors (see below), whose sum is σ = 1081800006. Its totient is φ = 360600000.

The previous prime is 721200001. The next prime is 721200023. The reversal of 721200002 is 200002127.

721200002 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 473106001 + 248094001 = 21751^2 + 15751^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 721200002.

It is not an unprimeable number, because it can be changed into a prime (721200001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180299999 + ... + 180300002.

Almost surely, 2^721200002 is an apocalyptic number.

721200002 is a deficient number, since it is larger than the sum of its proper divisors (360600004).

721200002 is a wasteful number, since it uses less digits than its factorization.

721200002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360600003.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 721200002 is about 26855.1671378154. The cubic root of 721200002 is about 896.7786076271.

Adding to 721200002 its reverse (200002127), we get a palindrome (921202129).

The spelling of 721200002 in words is "seven hundred twenty-one million, two hundred thousand, two".