721404050 has 12 divisors (see below), whose sum is σ = 1341811626. Its totient is φ = 288561600.

The previous prime is 721404049. The next prime is 721404067. The reversal of 721404050 is 50404127.

It can be written as a sum of positive squares in 3 ways, for example, as 465308041 + 256096009 = 21571^2 + 16003^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7213991 + ... + 7214090.

Almost surely, 2^721404050 is an apocalyptic number.

721404050 is a deficient number, since it is larger than the sum of its proper divisors (620407576).

721404050 is a wasteful number, since it uses less digits than its factorization.

721404050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14428093 (or 14428088 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 721404050 is about 26858.9659145694. The cubic root of 721404050 is about 896.8631743798.

Adding to 721404050 its reverse (50404127), we get a palindrome (771808177).

The spelling of 721404050 in words is "seven hundred twenty-one million, four hundred four thousand, fifty".