102102002 has 4 divisors (see below), whose sum is σ = 153153006. Its totient is φ = 51051000.

The previous prime is 102101971. The next prime is 102102019. The reversal of 102102002 is 200201201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 200201201 = 257 ⋅778993.

It can be written as a sum of positive squares in only one way, i.e., 64144081 + 37957921 = 8009^2 + 6161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25525499 + ... + 25525502.

Almost surely, 2^102102002 is an apocalyptic number.

102102002 is a deficient number, since it is larger than the sum of its proper divisors (51051004).

102102002 is an equidigital number, since it uses as much as digits as its factorization.

102102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51051003.

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

The square root of 102102002 is about 10104.5535279893. The cubic root of 102102002 is about 467.3885682923.

Adding to 102102002 its reverse (200201201), we get a palindrome (302303203).

It can be divided in two parts, 10 and 2102002, that added together give a palindrome (2102012).

The spelling of 102102002 in words is "one hundred two million, one hundred two thousand, two".