130405445 has 8 divisors (see below), whose sum is σ = 156549120. Its totient is φ = 104282640.

The previous prime is 130405433. The next prime is 130405447. The reversal of 130405445 is 544504031.

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

It is a de Polignac number, because none of the positive numbers 2^k-130405445 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130405447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17660 + ... + 23930.

It is an arithmetic number, because the mean of its divisors is an integer number (19568640).

Almost surely, 2^130405445 is an apocalyptic number.

It is an amenable number.

130405445 is a deficient number, since it is larger than the sum of its proper divisors (26143675).

130405445 is an equidigital number, since it uses as much as digits as its factorization.

130405445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10435.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 130405445 is about 11419.5203489464. The cubic root of 130405445 is about 507.1057969159.

Adding to 130405445 its reverse (544504031), we get a palindrome (674909476).

The spelling of 130405445 in words is "one hundred thirty million, four hundred five thousand, four hundred forty-five".