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12137541 = 3131718307
BaseRepresentation
bin101110010011…
…010001000101
3211211122120120
4232103101011
511101400131
61112052153
7205111263
oct56232105
924748516
1012137541
116940129
124094059
13268c7a0
14187d433
1510eb496
hexb93445

12137541 has 16 divisors (see below), whose sum is σ = 18454464. Its totient is φ = 7029504.

The previous prime is 12137533. The next prime is 12137551. The reversal of 12137541 is 14573121.

12137541 = 262 + 272 + ... + 3312.

It is not a de Polignac number, because 12137541 - 23 = 12137533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12137551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8491 + ... + 9816.

It is an arithmetic number, because the mean of its divisors is an integer number (1153404).

Almost surely, 212137541 is an apocalyptic number.

It is an amenable number.

12137541 is a deficient number, since it is larger than the sum of its proper divisors (6316923).

12137541 is a wasteful number, since it uses less digits than its factorization.

12137541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18340.

The product of its digits is 840, while the sum is 24.

The square root of 12137541 is about 3483.8973865486. The cubic root of 12137541 is about 229.8142230144.

The spelling of 12137541 in words is "twelve million, one hundred thirty-seven thousand, five hundred forty-one".

Divisors: 1 3 13 17 39 51 221 663 18307 54921 237991 311219 713973 933657 4045847 12137541