130142805 has 32 divisors (see below), whose sum is σ = 231490560. Its totient is φ = 62000640.

The previous prime is 130142791. The next prime is 130142813. The reversal of 130142805 is 508241031.

It is not a de Polignac number, because 130142805 - 2¹¹ = 130140757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4720 + ... + 16809.

It is an arithmetic number, because the mean of its divisors is an integer number (7234080).

Almost surely, 2^130142805 is an apocalyptic number.

130142805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

130142805 is a deficient number, since it is larger than the sum of its proper divisors (101347755).

130142805 is a wasteful number, since it uses less digits than its factorization.

130142805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21581.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 130142805 is about 11408.0149456424. The cubic root of 130142805 is about 506.7651266312.

Adding to 130142805 its reverse (508241031), we get a palindrome (638383836).

The spelling of 130142805 in words is "one hundred thirty million, one hundred forty-two thousand, eight hundred five".