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120013 = 432791
BaseRepresentation
bin11101010011001101
320002121221
4131103031
512320023
62323341
71006615
oct352315
9202557
10120013
1182193
1259551
134281a
1431a45
152585d
hex1d4cd

120013 has 4 divisors (see below), whose sum is σ = 122848. Its totient is φ = 117180.

The previous prime is 120011. The next prime is 120017. The reversal of 120013 is 310021.

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 not a de Polignac number, because 120013 - 21 = 120011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 119978 and 120005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120011) 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, 1353 + ... + 1438.

It is an arithmetic number, because the mean of its divisors is an integer number (30712).

2120013 is an apocalyptic number.

It is an amenable number.

120013 is a deficient number, since it is larger than the sum of its proper divisors (2835).

120013 is an equidigital number, since it uses as much as digits as its factorization.

120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 120013 is about 346.4289248894. The cubic root of 120013 is about 49.3260225755.

Adding to 120013 its reverse (310021), we get a palindrome (430034).

The spelling of 120013 in words is "one hundred twenty thousand, thirteen".

Divisors: 1 43 2791 120013