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136246241 = 178776243
BaseRepresentation
bin10000001111011…
…11001111100001
3100111101000201002
420013233033201
5234334334431
621304121345
73243034235
oct1007571741
9314330632
10136246241
116a9a88aa
1239766255
13222c48a1
14141485c5
15be643cb
hex81ef3e1

136246241 has 4 divisors (see below), whose sum is σ = 136324272. Its totient is φ = 136168212.

The previous prime is 136246223. The next prime is 136246249. The reversal of 136246241 is 142642631.

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: 142642631 = 178390743.

It is a cyclic number.

It is not a de Polignac number, because 136246241 - 226 = 69137377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136246249) 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, 36335 + ... + 39908.

It is an arithmetic number, because the mean of its divisors is an integer number (34081068).

Almost surely, 2136246241 is an apocalyptic number.

It is an amenable number.

136246241 is a deficient number, since it is larger than the sum of its proper divisors (78031).

136246241 is an equidigital number, since it uses as much as digits as its factorization.

136246241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78030.

The product of its digits is 6912, while the sum is 29.

The square root of 136246241 is about 11672.4565109492. The cubic root of 136246241 is about 514.5665010752.

Adding to 136246241 its reverse (142642631), we get a palindrome (278888872).

The spelling of 136246241 in words is "one hundred thirty-six million, two hundred forty-six thousand, two hundred forty-one".

Divisors: 1 1787 76243 136246241