4245221767 has 4 divisors (see below), whose sum is σ = 4248547416. Its totient is φ = 4241896120.

The previous prime is 4245221707. The next prime is 4245221789. The reversal of 4245221767 is 7671225424.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4245221767 - 2³¹ = 2097738119 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4245221707) 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 3 ways as a sum of consecutive naturals, for example, 1660909 + ... + 1663462.

It is an arithmetic number, because the mean of its divisors is an integer number (1062136854).

Almost surely, 2^4245221767 is an apocalyptic number.

4245221767 is a deficient number, since it is larger than the sum of its proper divisors (3325649).

4245221767 is a wasteful number, since it uses less digits than its factorization.

4245221767 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3325648.

The product of its digits is 188160, while the sum is 40.

The square root of 4245221767 is about 65155.3663714663. The cubic root of 4245221767 is about 1619.1986290765.

The spelling of 4245221767 in words is "four billion, two hundred forty-five million, two hundred twenty-one thousand, seven hundred sixty-seven".