102112240 has 80 divisors (see below), whose sum is σ = 244270080. Its totient is φ = 39686400.

The previous prime is 102112237. The next prime is 102112253. The reversal of 102112240 is 42211201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 102112240.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 676165 + ... + 676315.

It is an arithmetic number, because the mean of its divisors is an integer number (3053376).

Almost surely, 2^102112240 is an apocalyptic number.

102112240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102112240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122135040).

102112240 is an abundant number, since it is smaller than the sum of its proper divisors (142157840).

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

102112240 is a wasteful number, since it uses less digits than its factorization.

102112240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 344 counting only the distinct ones).

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

The square root of 102112240 is about 10105.0601185743. The cubic root of 102112240 is about 467.4041898085.

Adding to 102112240 its reverse (42211201), we get a palindrome (144323441).

The spelling of 102112240 in words is "one hundred two million, one hundred twelve thousand, two hundred forty".