130342666 has 4 divisors (see below), whose sum is σ = 195514002. Its totient is φ = 65171332.

The previous prime is 130342661. The next prime is 130342673. The reversal of 130342666 is 666243031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666243031 = 293 ⋅2273867.

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 2313441 = 11315^2 + 1521^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (130342661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32585665 + ... + 32585668.

Almost surely, 2^130342666 is an apocalyptic number.

130342666 is a deficient number, since it is larger than the sum of its proper divisors (65171336).

130342666 is an equidigital number, since it uses as much as digits as its factorization.

130342666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65171335.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 130342666 is about 11416.7712598615. The cubic root of 130342666 is about 507.0244079194.

Adding to 130342666 its reverse (666243031), we get a palindrome (796585697).

The spelling of 130342666 in words is "one hundred thirty million, three hundred forty-two thousand, six hundred sixty-six".