102002103240 has 128 divisors (see below), whose sum is σ = 326874735360. Its totient is φ = 25373917184.

The previous prime is 102002103197. The next prime is 102002103241. The reversal of 102002103240 is 42301200201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (102002103241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9277 + ... + 451763.

It is an arithmetic number, because the mean of its divisors is an integer number (2553708870).

Almost surely, 2^102002103240 is an apocalyptic number.

102002103240 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 102002103240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163437367680).

102002103240 is an abundant number, since it is smaller than the sum of its proper divisors (224872632120).

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

102002103240 is a wasteful number, since it uses less digits than its factorization.

102002103240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442631 (or 442627 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 102002103240 its reverse (42301200201), we get a palindrome (144303303441).

The spelling of 102002103240 in words is "one hundred two billion, two million, one hundred three thousand, two hundred forty".