130020406 has 4 divisors (see below), whose sum is σ = 195030612. Its totient is φ = 65010202.

The previous prime is 130020361. The next prime is 130020421. The reversal of 130020406 is 604020031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604020031 = 73 ⋅8274247.

It is a self number, because there is not a number n which added to its sum of digits gives 130020406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32505100 + ... + 32505103.

It is an arithmetic number, because the mean of its divisors is an integer number (48757653).

Almost surely, 2^130020406 is an apocalyptic number.

130020406 is a deficient number, since it is larger than the sum of its proper divisors (65010206).

130020406 is an equidigital number, since it uses as much as digits as its factorization.

130020406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65010205.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 130020406 is about 11402.6490781748. The cubic root of 130020406 is about 506.6062063321.

Adding to 130020406 its reverse (604020031), we get a palindrome (734040437).

The spelling of 130020406 in words is "one hundred thirty million, twenty thousand, four hundred six".