130124640 has 96 divisors (see below), whose sum is σ = 411505920. Its totient is φ = 34563584.

The previous prime is 130124609. The next prime is 130124641. The reversal of 130124640 is 46421031.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130124641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200797 + ... + 201443.

It is an arithmetic number, because the mean of its divisors is an integer number (4286520).

Almost surely, 2^130124640 is an apocalyptic number.

130124640 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 130124640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205752960).

130124640 is an abundant number, since it is smaller than the sum of its proper divisors (281381280).

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

130124640 is a wasteful number, since it uses less digits than its factorization.

130124640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 130124640 is about 11407.2187670790. The cubic root of 130124640 is about 506.7415478738.

Adding to 130124640 its reverse (46421031), we get a palindrome (176545671).

The spelling of 130124640 in words is "one hundred thirty million, one hundred twenty-four thousand, six hundred forty".