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12142153 = 83146291
BaseRepresentation
bin101110010100…
…011001001001
3211211212220101
4232110121021
511102022103
61112125401
7205130602
oct56243111
924755811
1012142153
116943641
124096861
13269190a
141880da9
1510eca1d
hexb94649

12142153 has 4 divisors (see below), whose sum is σ = 12288528. Its totient is φ = 11995780.

The previous prime is 12142147. The next prime is 12142177. The reversal of 12142153 is 35124121.

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: 35124121 = 118129741.

It is a cyclic number.

It is not a de Polignac number, because 12142153 - 29 = 12141641 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12142153.

It is not an unprimeable number, because it can be changed into a prime (12142103) 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 3 ways as a sum of consecutive naturals, for example, 73063 + ... + 73228.

It is an arithmetic number, because the mean of its divisors is an integer number (3072132).

Almost surely, 212142153 is an apocalyptic number.

It is an amenable number.

12142153 is a deficient number, since it is larger than the sum of its proper divisors (146375).

12142153 is an equidigital number, since it uses as much as digits as its factorization.

12142153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146374.

The product of its digits is 240, while the sum is 19.

The square root of 12142153 is about 3484.5592260715. The cubic root of 12142153 is about 229.8433274537.

Adding to 12142153 its reverse (35124121), we get a palindrome (47266274).

The spelling of 12142153 in words is "twelve million, one hundred forty-two thousand, one hundred fifty-three".

Divisors: 1 83 146291 12142153