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136229 = 235923
BaseRepresentation
bin100001010000100101
320220212112
4201100211
513324404
62530405
71105112
oct412045
9226775
10136229
1193395
1266a05
134a012
1437909
152a56e
hex21425

136229 has 4 divisors (see below), whose sum is σ = 142176. Its totient is φ = 130284.

The previous prime is 136223. The next prime is 136237. The reversal of 136229 is 922631.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-136229 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5923 = 136229 / (1 + 3 + 6 + 2 + 2 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136223) 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, 2939 + ... + 2984.

It is an arithmetic number, because the mean of its divisors is an integer number (35544).

2136229 is an apocalyptic number.

It is an amenable number.

136229 is a deficient number, since it is larger than the sum of its proper divisors (5947).

136229 is an equidigital number, since it uses as much as digits as its factorization.

136229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5946.

The product of its digits is 648, while the sum is 23.

The square root of 136229 is about 369.0921294203. The cubic root of 136229 is about 51.4544795240.

It can be divided in two parts, 13622 and 9, that added together give a palindrome (13631).

The spelling of 136229 in words is "one hundred thirty-six thousand, two hundred twenty-nine".

Divisors: 1 23 5923 136229