4020421108 has 24 divisors (see below), whose sum is σ = 7726874400. Its totient is φ = 1815196320.

The previous prime is 4020421057. The next prime is 4020421117. The reversal of 4020421108 is 8011240204.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300066 + ... + 313177.

It is an arithmetic number, because the mean of its divisors is an integer number (321953100).

Almost surely, 2^4020421108 is an apocalyptic number.

It is an amenable number.

4020421108 is a deficient number, since it is larger than the sum of its proper divisors (3706453292).

4020421108 is a wasteful number, since it uses less digits than its factorization.

4020421108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613407 (or 613405 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

The square root of 4020421108 is about 63406.7907088823. The cubic root of 4020421108 is about 1590.0978419018.

The spelling of 4020421108 in words is "four billion, twenty million, four hundred twenty-one thousand, one hundred eight".