3721423005 has 24 divisors (see below), whose sum is σ = 6451885440. Its totient is φ = 1984322400.

The previous prime is 3721423001. The next prime is 3721423019. The reversal of 3721423005 is 5003241273.

It is not a de Polignac number, because 3721423005 - 2² = 3721423001 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3721423005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721423001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 398176 + ... + 407414.

It is an arithmetic number, because the mean of its divisors is an integer number (268828560).

Almost surely, 2^3721423005 is an apocalyptic number.

It is an amenable number.

3721423005 is a deficient number, since it is larger than the sum of its proper divisors (2730462435).

3721423005 is a wasteful number, since it uses less digits than its factorization.

3721423005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18201 (or 18198 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 3721423005 is about 61003.4671555642. The cubic root of 3721423005 is about 1549.6597248184.

Adding to 3721423005 its reverse (5003241273), we get a palindrome (8724664278).

The spelling of 3721423005 in words is "three billion, seven hundred twenty-one million, four hundred twenty-three thousand, five".