4002402402 has 64 divisors (see below), whose sum is σ = 9416880000. Its totient is φ = 1256554944.

The previous prime is 4002402401. The next prime is 4002402403. The reversal of 4002402402 is 2042042004.

4002402402 is a `hidden beast` number, since 400 + 24 + 0 + 240 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (4002402401) and next prime (4002402403).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (4002402401) 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 31 ways as a sum of consecutive naturals, for example, 166224 + ... + 188772.

It is an arithmetic number, because the mean of its divisors is an integer number (147138750).

Almost surely, 2^4002402402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4002402402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4708440000).

4002402402 is an abundant number, since it is smaller than the sum of its proper divisors (5414477598).

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

4002402402 is a wasteful number, since it uses less digits than its factorization.

4002402402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22752 (or 22746 counting only the distinct ones).

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

The square root of 4002402402 is about 63264.5430079124. The cubic root of 4002402402 is about 1587.7187863214.

Adding to 4002402402 its reverse (2042042004), we get a palindrome (6044444406).

The spelling of 4002402402 in words is "four billion, two million, four hundred two thousand, four hundred two".