102246140 has 12 divisors (see below), whose sum is σ = 214716936. Its totient is φ = 40898448.

The previous prime is 102246127. The next prime is 102246149. The reversal of 102246140 is 41642201.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5112307 = 102246140 / (1 + 0 + 2 + 2 + 4 + 6 + 1 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102246149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2556134 + ... + 2556173.

It is an arithmetic number, because the mean of its divisors is an integer number (17893078).

Almost surely, 2^102246140 is an apocalyptic number.

102246140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102246140 is an abundant number, since it is smaller than the sum of its proper divisors (112470796).

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

102246140 is a wasteful number, since it uses less digits than its factorization.

102246140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112316 (or 5112314 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 102246140 is about 10111.6833415609. The cubic root of 102246140 is about 467.6084032792.

Adding to 102246140 its reverse (41642201), we get a palindrome (143888341).

The spelling of 102246140 in words is "one hundred two million, two hundred forty-six thousand, one hundred forty".