102140212 has 12 divisors (see below), whose sum is σ = 182548800. Its totient is φ = 49983416.

The previous prime is 102140191. The next prime is 102140221. The reversal of 102140212 is 212041201.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 102140192 and 102140201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 271462 + ... + 271837.

It is an arithmetic number, because the mean of its divisors is an integer number (15212400).

Almost surely, 2^102140212 is an apocalyptic number.

It is an amenable number.

102140212 is a deficient number, since it is larger than the sum of its proper divisors (80408588).

102140212 is a wasteful number, since it uses less digits than its factorization.

102140212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543350 (or 543348 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 102140212 is about 10106.4440828612. Note that the first 3 decimals coincide. The cubic root of 102140212 is about 467.4468651899.

Adding to 102140212 its reverse (212041201), we get a palindrome (314181413).

The spelling of 102140212 in words is "one hundred two million, one hundred forty thousand, two hundred twelve".