130145506 has 8 divisors (see below), whose sum is σ = 206701740. Its totient is φ = 61244928.

The previous prime is 130145503. The next prime is 130145507. The reversal of 130145506 is 605541031.

It can be written as a sum of positive squares in 2 ways, for example, as 129754881 + 390625 = 11391^2 + 625^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (130145503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913871 + ... + 1913938.

Almost surely, 2^130145506 is an apocalyptic number.

130145506 is a deficient number, since it is larger than the sum of its proper divisors (76556234).

130145506 is a wasteful number, since it uses less digits than its factorization.

130145506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827828.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 130145506 is about 11408.1333267104. The cubic root of 130145506 is about 506.7686324291.

Adding to 130145506 its reverse (605541031), we get a palindrome (735686537).

The spelling of 130145506 in words is "one hundred thirty million, one hundred forty-five thousand, five hundred six".