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12124407 = 329139361
BaseRepresentation
bin101110010000…
…000011110111
3211210222120010
4232100003313
511100440112
61111511303
7205025061
oct56200367
924728503
1012124407
116931279
124088533
132686809
141878731
1510e763c
hexb900f7

12124407 has 8 divisors (see below), whose sum is σ = 16723440. Its totient is φ = 7804160.

The previous prime is 12124369. The next prime is 12124423. The reversal of 12124407 is 70442121.

It is a happy number.

12124407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12124407 - 211 = 12122359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12124487) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69594 + ... + 69767.

It is an arithmetic number, because the mean of its divisors is an integer number (2090430).

Almost surely, 212124407 is an apocalyptic number.

12124407 is a deficient number, since it is larger than the sum of its proper divisors (4599033).

12124407 is a wasteful number, since it uses less digits than its factorization.

12124407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139393.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12124407 is about 3482.0119184173. The cubic root of 12124407 is about 229.7312993154.

Adding to 12124407 its reverse (70442121), we get a palindrome (82566528).

The spelling of 12124407 in words is "twelve million, one hundred twenty-four thousand, four hundred seven".

Divisors: 1 3 29 87 139361 418083 4041469 12124407