4001220245 has 8 divisors (see below), whose sum is σ = 5237961120. Its totient is φ = 2909978320.

The previous prime is 4001220239. The next prime is 4001220247. The reversal of 4001220245 is 5420221004.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4001220245 - 2¹⁰ = 4001219221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001220247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36374675 + ... + 36374784.

It is an arithmetic number, because the mean of its divisors is an integer number (654745140).

Almost surely, 2^4001220245 is an apocalyptic number.

It is an amenable number.

4001220245 is a deficient number, since it is larger than the sum of its proper divisors (1236740875).

4001220245 is a wasteful number, since it uses less digits than its factorization.

4001220245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72749475.

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4001220245 is about 63255.1993515158. The cubic root of 4001220245 is about 1587.5624537399.

Adding to 4001220245 its reverse (5420221004), we get a palindrome (9421441249).

The spelling of 4001220245 in words is "four billion, one million, two hundred twenty thousand, two hundred forty-five".