Search a number
-
+
143109 = 3215901
BaseRepresentation
bin100010111100000101
321021022100
4202330011
514034414
63022313
71134141
oct427405
9237270
10143109
119857a
126a999
13501a5
143a221
152c609
hex22f05

143109 has 6 divisors (see below), whose sum is σ = 206726. Its totient is φ = 95400.

The previous prime is 143107. The next prime is 143111. The reversal of 143109 is 901341.

It is an interprime number because it is at equal distance from previous prime (143107) and next prime (143111).

It can be written as a sum of positive squares in only one way, i.e., 142884 + 225 = 378^2 + 15^2 .

It is not a de Polignac number, because 143109 - 21 = 143107 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 143091 and 143100.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 143109.

It is not an unprimeable number, because it can be changed into a prime (143107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7942 + ... + 7959.

2143109 is an apocalyptic number.

It is an amenable number.

143109 is a deficient number, since it is larger than the sum of its proper divisors (63617).

143109 is a wasteful number, since it uses less digits than its factorization.

143109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15907 (or 15904 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 143109 is about 378.2975019743. The cubic root of 143109 is about 52.3064985643.

It can be divided in two parts, 143 and 109, that added together give a palindrome (252).

The spelling of 143109 in words is "one hundred forty-three thousand, one hundred nine".

Divisors: 1 3 9 15901 47703 143109