4208721245 has 16 divisors (see below), whose sum is σ = 5129016960. Its totient is φ = 3314672064.

The previous prime is 4208721239. The next prime is 4208721259. The reversal of 4208721245 is 5421278024.

It is a cyclic number.

It is not a de Polignac number, because 4208721245 - 2¹⁴ = 4208704861 is a prime.

It is a super-2 number, since 2×4208721245² = 35426669036228700050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765416 + ... + 770894.

It is an arithmetic number, because the mean of its divisors is an integer number (320563560).

Almost surely, 2^4208721245 is an apocalyptic number.

It is an amenable number.

4208721245 is a deficient number, since it is larger than the sum of its proper divisors (920295715).

4208721245 is a wasteful number, since it uses less digits than its factorization.

4208721245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7844.

The product of its (nonzero) digits is 35840, while the sum is 35.

The square root of 4208721245 is about 64874.6579567091. The cubic root of 4208721245 is about 1614.5446284247.

Adding to 4208721245 its reverse (5421278024), we get a palindrome (9629999269).

The spelling of 4208721245 in words is "four billion, two hundred eight million, seven hundred twenty-one thousand, two hundred forty-five".