2400002002 has 4 divisors (see below), whose sum is σ = 3600003006. Its totient is φ = 1200001000.

The previous prime is 2400001997. The next prime is 2400002023. The reversal of 2400002002 is 2002000042.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2266807321 + 133194681 = 47611^2 + 11541^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2400002002.

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 as a sum of consecutive naturals, namely, 600000499 + ... + 600000502.

Almost surely, 2^2400002002 is an apocalyptic number.

2400002002 is a deficient number, since it is larger than the sum of its proper divisors (1200001004).

2400002002 is a wasteful number, since it uses less digits than its factorization.

2400002002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200001003.

The product of its (nonzero) digits is 32, while the sum is 10.

The square root of 2400002002 is about 48989.8152884862. The cubic root of 2400002002 is about 1338.8662724433.

Adding to 2400002002 its reverse (2002000042), we get a palindrome (4402002044).

The spelling of 2400002002 in words is "two billion, four hundred million, two thousand, two".