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12012413 = 71716059
BaseRepresentation
bin101101110100…
…101101111101
3211121021221012
4231310231331
511033344123
61105245005
7204050420
oct55645575
924537835
1012012413
116865116
124033765
13264784a
1418499b7
1510c4378
hexb74b7d

12012413 has 4 divisors (see below), whose sum is σ = 13728480. Its totient is φ = 10296348.

The previous prime is 12012367. The next prime is 12012433. The reversal of 12012413 is 31421021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31421021 = 163192767.

It is a cyclic number.

It is not a de Polignac number, because 12012413 - 26 = 12012349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 858023 + ... + 858036.

It is an arithmetic number, because the mean of its divisors is an integer number (3432120).

Almost surely, 212012413 is an apocalyptic number.

It is an amenable number.

12012413 is a deficient number, since it is larger than the sum of its proper divisors (1716067).

12012413 is an equidigital number, since it uses as much as digits as its factorization.

12012413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716066.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12012413 is about 3465.8928142688. The cubic root of 12012413 is about 229.0217620732.

Adding to 12012413 its reverse (31421021), we get a palindrome (43433434).

The spelling of 12012413 in words is "twelve million, twelve thousand, four hundred thirteen".

Divisors: 1 7 1716059 12012413