102130240 has 56 divisors (see below), whose sum is σ = 244693440. Its totient is φ = 40601088.

The previous prime is 102130229. The next prime is 102130241. The reversal of 102130240 is 42031201.

It is a self number, because there is not a number n which added to its sum of digits gives 102130240.

It is not an unprimeable number, because it can be changed into a prime (102130241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56389 + ... + 58171.

Almost surely, 2^102130240 is an apocalyptic number.

102130240 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 102130240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122346720).

102130240 is an abundant number, since it is smaller than the sum of its proper divisors (142563200).

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

102130240 is a wasteful number, since it uses less digits than its factorization.

102130240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979 (or 1969 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102130240 is about 10105.9507222230. The cubic root of 102130240 is about 467.4316523377.

Adding to 102130240 its reverse (42031201), we get a palindrome (144161441).

The spelling of 102130240 in words is "one hundred two million, one hundred thirty thousand, two hundred forty".