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12124445 = 514091721
BaseRepresentation
bin101110010000…
…000100011101
3211210222121112
4232100010131
511100440240
61111511405
7205025144
oct56200435
924728545
1012124445
116931303
124088565
132686838
14187875b
1510e7665
hexb9011d

12124445 has 8 divisors (see below), whose sum is σ = 14568120. Its totient is φ = 9687040.

The previous prime is 12124423. The next prime is 12124481. The reversal of 12124445 is 54442121.

It can be written as a sum of positive squares in 4 ways, for example, as 145924 + 11978521 = 382^2 + 3461^2 .

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

It is not a de Polignac number, because 12124445 - 216 = 12058909 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12124445.

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, 6185 + ... + 7905.

It is an arithmetic number, because the mean of its divisors is an integer number (1821015).

Almost surely, 212124445 is an apocalyptic number.

It is an amenable number.

12124445 is a deficient number, since it is larger than the sum of its proper divisors (2443675).

12124445 is a wasteful number, since it uses less digits than its factorization.

12124445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3135.

The product of its digits is 1280, while the sum is 23.

The square root of 12124445 is about 3482.0173750284. The cubic root of 12124445 is about 229.7315393211.

Adding to 12124445 its reverse (54442121), we get a palindrome (66566566).

The spelling of 12124445 in words is "twelve million, one hundred twenty-four thousand, four hundred forty-five".

Divisors: 1 5 1409 1721 7045 8605 2424889 12124445