130120245 has 24 divisors (see below), whose sum is σ = 233321400. Its totient is φ = 67003776.

The previous prime is 130120241. The next prime is 130120283. The reversal of 130120245 is 542021031.

It can be written as a sum of positive squares in 4 ways, for example, as 48525156 + 81595089 = 6966^2 + 9033^2 .

It is not a de Polignac number, because 130120245 - 2² = 130120241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130120241) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48550 + ... + 51159.

It is an arithmetic number, because the mean of its divisors is an integer number (9721725).

Almost surely, 2^130120245 is an apocalyptic number.

130120245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130120245 is a deficient number, since it is larger than the sum of its proper divisors (103201155).

130120245 is a wasteful number, since it uses less digits than its factorization.

130120245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99749 (or 99746 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 130120245 is about 11407.0261242797. The cubic root of 130120245 is about 506.7358426921.

Adding to 130120245 its reverse (542021031), we get a palindrome (672141276).

The spelling of 130120245 in words is "one hundred thirty million, one hundred twenty thousand, two hundred forty-five".