Search a number
-
+
12130451 = 36733053
BaseRepresentation
bin101110010001…
…100010010011
3211211021211222
4232101202103
511101133301
61111555255
7205051514
oct56214223
924737758
1012130451
116935873
12408bb2b
1326894a8
14187aa0b
1510e931b
hexb91893

12130451 has 4 divisors (see below), whose sum is σ = 12163872. Its totient is φ = 12097032.

The previous prime is 12130441. The next prime is 12130463. The reversal of 12130451 is 15403121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15403121 = 26358567.

It is a cyclic number.

It is not a de Polignac number, because 12130451 - 26 = 12130387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12130411) 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, 16160 + ... + 16893.

It is an arithmetic number, because the mean of its divisors is an integer number (3040968).

Almost surely, 212130451 is an apocalyptic number.

12130451 is a deficient number, since it is larger than the sum of its proper divisors (33421).

12130451 is an equidigital number, since it uses as much as digits as its factorization.

12130451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33420.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12130451 is about 3482.8796993293. The cubic root of 12130451 is about 229.7694665516.

Adding to 12130451 its reverse (15403121), we get a palindrome (27533572).

The spelling of 12130451 in words is "twelve million, one hundred thirty thousand, four hundred fifty-one".

Divisors: 1 367 33053 12130451