102040210 has 8 divisors (see below), whose sum is σ = 183672396. Its totient is φ = 40816080.

The previous prime is 102040201. The next prime is 102040231. The reversal of 102040210 is 12040201.

It can be written as a sum of positive squares in 2 ways, for example, as 101666889 + 373321 = 10083^2 + 611^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (10), and also a Moran number because the ratio is a prime number: 10204021 = 102040210 / (1 + 0 + 2 + 0 + 4 + 0 + 2 + 1 + 0).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5102001 + ... + 5102020.

Almost surely, 2^102040210 is an apocalyptic number.

102040210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102040210 is a deficient number, since it is larger than the sum of its proper divisors (81632186).

102040210 is a wasteful number, since it uses less digits than its factorization.

102040210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10204028.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 102040210 is about 10101.4954338454. The cubic root of 102040210 is about 467.2942616120.

Adding to 102040210 its reverse (12040201), we get a palindrome (114080411).

Subtracting from 102040210 its reverse (12040201), we obtain a palindrome (90000009).

The spelling of 102040210 in words is "one hundred two million, forty thousand, two hundred ten".