4002002442 has 12 divisors (see below), whose sum is σ = 8671005330. Its totient is φ = 1334000808.

The previous prime is 4002002441. The next prime is 4002002503. The reversal of 4002002442 is 2442002004.

4002002442 is a `hidden beast` number, since 400 + 20 + 0 + 244 + 2 = 666.

4002002442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3962576601 + 39425841 = 62949^2 + 6279^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 222333469 = 4002002442 / (4 + 0 + 0 + 2 + 0 + 0 + 2 + 4 + 4 + 2).

It is not an unprimeable number, because it can be changed into a prime (4002002441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111166717 + ... + 111166752.

Almost surely, 2^4002002442 is an apocalyptic number.

4002002442 is an abundant number, since it is smaller than the sum of its proper divisors (4669002888).

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

4002002442 is a wasteful number, since it uses less digits than its factorization.

4002002442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222333477 (or 222333474 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4002002442 is about 63261.3819166164. The cubic root of 4002002442 is about 1587.6658976564.

Adding to 4002002442 its reverse (2442002004), we get a palindrome (6444004446).

The spelling of 4002002442 in words is "four billion, two million, two thousand, four hundred forty-two".