4220020145 has 8 divisors (see below), whose sum is σ = 5524390080. Its totient is φ = 3069105520.

The previous prime is 4220020121. The next prime is 4220020159. The reversal of 4220020145 is 5410200224.

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 4220020145 - 2⁶ = 4220020081 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 38363765 + ... + 38363874.

It is an arithmetic number, because the mean of its divisors is an integer number (690548760).

Almost surely, 2^4220020145 is an apocalyptic number.

It is an amenable number.

4220020145 is a deficient number, since it is larger than the sum of its proper divisors (1304369935).

4220020145 is a wasteful number, since it uses less digits than its factorization.

4220020145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76727655.

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

The square root of 4220020145 is about 64961.6821287750. The cubic root of 4220020145 is about 1615.9881609238.

Adding to 4220020145 its reverse (5410200224), we get a palindrome (9630220369).

The spelling of 4220020145 in words is "four billion, two hundred twenty million, twenty thousand, one hundred forty-five".