4156642020 has 24 divisors (see below), whose sum is σ = 11638597824. Its totient is φ = 1108437856.

The previous prime is 4156642019. The next prime is 4156642043. The reversal of 4156642020 is 202466514.

It is a super-3 number, since 3×4156642020³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 34638624 + ... + 34638743.

It is an arithmetic number, because the mean of its divisors is an integer number (484941576).

Almost surely, 2^4156642020 is an apocalyptic number.

It is an amenable number.

4156642020 is an abundant number, since it is smaller than the sum of its proper divisors (7481955804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4156642020 is a wasteful number, since it uses less digits than its factorization.

4156642020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69277379 (or 69277377 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 4156642020 is about 64472.0250961609. The cubic root of 4156642020 is about 1607.8574460269.

The spelling of 4156642020 in words is "four billion, one hundred fifty-six million, six hundred forty-two thousand, twenty".