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122613 = 3231777
BaseRepresentation
bin11101111011110101
320020012020
4131323311
512410423
62343353
71020321
oct357365
9206166
10122613
1184137
125ab59
1343a6a
1432981
15264e3
hex1def5

122613 has 8 divisors (see below), whose sum is σ = 170688. Its totient is φ = 78144.

The previous prime is 122611. The next prime is 122651. The reversal of 122613 is 316221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122613 - 21 = 122611 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 122592 and 122601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820 + ... + 957.

It is an arithmetic number, because the mean of its divisors is an integer number (21336).

2122613 is an apocalyptic number.

It is an amenable number.

122613 is a deficient number, since it is larger than the sum of its proper divisors (48075).

122613 is a wasteful number, since it uses less digits than its factorization.

122613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1803.

The product of its digits is 72, while the sum is 15.

The square root of 122613 is about 350.1613913612. The cubic root of 122613 is about 49.6796856901.

Adding to 122613 its reverse (316221), we get a palindrome (438834).

The spelling of 122613 in words is "one hundred twenty-two thousand, six hundred thirteen".

Divisors: 1 3 23 69 1777 5331 40871 122613