102002002 has 4 divisors (see below), whose sum is σ = 153003006. Its totient is φ = 51001000.

The previous prime is 102001993. The next prime is 102002003. The reversal of 102002002 is 200200201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200200201 = 31 ⋅6458071.

It can be written as a sum of positive squares in only one way, i.e., 64657681 + 37344321 = 8041^2 + 6111^2 .

102002002 is a modest number, since divided by 2002 gives 102 as remainder.

It is not an unprimeable number, because it can be changed into a prime (102002003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25500499 + ... + 25500502.

Almost surely, 2^102002002 is an apocalyptic number.

102002002 is a deficient number, since it is larger than the sum of its proper divisors (51001004).

102002002 is an equidigital number, since it uses as much as digits as its factorization.

102002002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51001003.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 102002002 is about 10099.6040516448. The cubic root of 102002002 is about 467.2359296790.

Adding to 102002002 its reverse (200200201), we get a palindrome (302202203).

The spelling of 102002002 in words is "one hundred two million, two thousand, two".