102140244 has 48 divisors (see below), whose sum is σ = 266058240. Its totient is φ = 33886080.

The previous prime is 102140231. The next prime is 102140249. The reversal of 102140244 is 442041201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102140249) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21964 + ... + 26204.

It is an arithmetic number, because the mean of its divisors is an integer number (5542880).

Almost surely, 2^102140244 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102140244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133029120).

102140244 is an abundant number, since it is smaller than the sum of its proper divisors (163917996).

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

102140244 is a wasteful number, since it uses less digits than its factorization.

102140244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477 (or 4469 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 102140244 is about 10106.4456660094. The cubic root of 102140244 is about 467.4469140061.

Adding to 102140244 its reverse (442041201), we get a palindrome (544181445).

The spelling of 102140244 in words is "one hundred two million, one hundred forty thousand, two hundred forty-four".