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12144202141 = 61404949169
BaseRepresentation
bin10110100111101100…
…11101000110011101
31011100100110101111111
423103312131012131
5144332403432031
65325020222021
7606642005101
oct132366350635
934310411444
1012144202141
1151720a38a5
12242b09a911
1311b6cb3736
14832c37901
154b12571b1
hex2d3d9d19d

12144202141 has 8 divisors (see below), whose sum is σ = 12346587000. Its totient is φ = 11941923840.

The previous prime is 12144202121. The next prime is 12144202159. The reversal of 12144202141 is 14120244121.

It can be written as a sum of positive squares in 4 ways, for example, as 32319225 + 12111882916 = 5685^2 + 110054^2 .

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 12144202141 - 219 = 12143677853 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 (12144202121) 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, 222405 + ... + 271573.

It is an arithmetic number, because the mean of its divisors is an integer number (1543323375).

Almost surely, 212144202141 is an apocalyptic number.

It is an amenable number.

12144202141 is a deficient number, since it is larger than the sum of its proper divisors (202384859).

12144202141 is an equidigital number, since it uses as much as digits as its factorization.

12144202141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53279.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12144202141 its reverse (14120244121), we get a palindrome (26264446262).

The spelling of 12144202141 in words is "twelve billion, one hundred forty-four million, two hundred two thousand, one hundred forty-one".

Divisors: 1 61 4049 49169 246989 2999309 199085281 12144202141