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12430153 = 61203773
BaseRepresentation
bin101111011010…
…101101001001
3212101111222001
4233122231021
511140231103
61122231001
7210440341
oct57325511
925344861
1012430153
11701aa5a
1241b5461
132762a28
141917d21
15115801d
hexbdab49

12430153 has 4 divisors (see below), whose sum is σ = 12633988. Its totient is φ = 12226320.

The previous prime is 12430133. The next prime is 12430181. The reversal of 12430153 is 35103421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35103421 = 41856181.

It can be written as a sum of positive squares in 2 ways, for example, as 1750329 + 10679824 = 1323^2 + 3268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12430153 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 12430153.

It is not an unprimeable number, because it can be changed into a prime (12430133) 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, 101826 + ... + 101947.

It is an arithmetic number, because the mean of its divisors is an integer number (3158497).

Almost surely, 212430153 is an apocalyptic number.

It is an amenable number.

12430153 is a deficient number, since it is larger than the sum of its proper divisors (203835).

12430153 is an equidigital number, since it uses as much as digits as its factorization.

12430153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203834.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12430153 is about 3525.6422110021. The cubic root of 12430153 is about 231.6463659615.

Adding to 12430153 its reverse (35103421), we get a palindrome (47533574).

The spelling of 12430153 in words is "twelve million, four hundred thirty thousand, one hundred fifty-three".

Divisors: 1 61 203773 12430153