130020445 has 8 divisors (see below), whose sum is σ = 156887640. Its totient is φ = 103440960.

The previous prime is 130020421. The next prime is 130020467. The reversal of 130020445 is 544020031.

It can be written as a sum of positive squares in 4 ways, for example, as 11689561 + 118330884 = 3419^2 + 10878^2 .

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

It is not a de Polignac number, because 130020445 - 2¹⁵ = 129987677 is a prime.

It is a super-2 number, since 2×130020445² = 33810632235996050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70930 + ... + 72739.

It is an arithmetic number, because the mean of its divisors is an integer number (19610955).

Almost surely, 2^130020445 is an apocalyptic number.

It is an amenable number.

130020445 is a deficient number, since it is larger than the sum of its proper divisors (26867195).

130020445 is a wasteful number, since it uses less digits than its factorization.

130020445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143855.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 130020445 is about 11402.6507883036. The cubic root of 130020445 is about 506.6062569847.

Adding to 130020445 its reverse (544020031), we get a palindrome (674040476).

The spelling of 130020445 in words is "one hundred thirty million, twenty thousand, four hundred forty-five".