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130526421 = 3891393517
BaseRepresentation
bin1111100011110…
…10110011010101
3100002121102120220
413301322303111
5231403321141
620541344553
73143312334
oct761726325
9302542526
10130526421
1167751483
1237868159
132107128c
1413499d1b
15b6d4766
hex7c7acd5

130526421 has 16 divisors (see below), whose sum is σ = 177307200. Its totient is φ = 85396608.

The previous prime is 130526393. The next prime is 130526437. The reversal of 130526421 is 124625031.

It is not a de Polignac number, because 130526421 - 219 = 130002133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130526391 and 130526400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130546421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35355 + ... + 38871.

It is an arithmetic number, because the mean of its divisors is an integer number (11081700).

Almost surely, 2130526421 is an apocalyptic number.

It is an amenable number.

130526421 is a deficient number, since it is larger than the sum of its proper divisors (46780779).

130526421 is a wasteful number, since it uses less digits than its factorization.

130526421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3748.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 130526421 is about 11424.8160160241. The cubic root of 130526421 is about 507.2625609991.

The spelling of 130526421 in words is "one hundred thirty million, five hundred twenty-six thousand, four hundred twenty-one".

Divisors: 1 3 89 139 267 417 3517 10551 12371 37113 313013 488863 939039 1466589 43508807 130526421