102001002 has 32 divisors (see below), whose sum is σ = 208111680. Its totient is φ = 33321600.

The previous prime is 102000979. The next prime is 102001007. The reversal of 102001002 is 200100201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is not an unprimeable number, because it can be changed into a prime (102001007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77752 + ... + 79052.

It is an arithmetic number, because the mean of its divisors is an integer number (6503490).

Almost surely, 2^102001002 is an apocalyptic number.

102001002 is an abundant number, since it is smaller than the sum of its proper divisors (106110678).

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

102001002 is a wasteful number, since it uses less digits than its factorization.

102001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1558.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 102001002 is about 10099.5545446322. The cubic root of 102001002 is about 467.2344027891.

Adding to 102001002 its reverse (200100201), we get a palindrome (302101203).

The spelling of 102001002 in words is "one hundred two million, one thousand, two".