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130144401 = 341794513
BaseRepresentation
bin1111100000111…
…01100010010001
3100001220000120000
413300131202101
5231304110101
620525240213
73140131512
oct760354221
9301800500
10130144401
1167510462
1237703069
1320c6942a
14133daa09
15b65b486
hex7c1d891

130144401 has 20 divisors (see below), whose sum is σ = 205851492. Its totient is φ = 81658368.

The previous prime is 130144387. The next prime is 130144403. The reversal of 130144401 is 104441031.

It can be written as a sum of positive squares in 2 ways, for example, as 108993600 + 21150801 = 10440^2 + 4599^2 .

It is not a de Polignac number, because 130144401 - 25 = 130144369 is a prime.

It is a super-2 number, since 2×1301444012 = 33875130223297602, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130144403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 45880 + ... + 48633.

Almost surely, 2130144401 is an apocalyptic number.

It is an amenable number.

130144401 is a deficient number, since it is larger than the sum of its proper divisors (75707091).

130144401 is an equidigital number, since it uses as much as digits as its factorization.

130144401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94542 (or 94533 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 130144401 is about 11408.0848962479. The cubic root of 130144401 is about 506.7671981859.

Adding to 130144401 its reverse (104441031), we get a palindrome (234585432).

The spelling of 130144401 in words is "one hundred thirty million, one hundred forty-four thousand, four hundred one".

Divisors: 1 3 9 17 27 51 81 153 459 1377 94513 283539 850617 1606721 2551851 4820163 7655553 14460489 43381467 130144401