Search a number
-
+
2145243 = 341107163
BaseRepresentation
bin1000001011101111011011
311000222201110
420023233123
51022121433
6113551403
724143232
oct10135733
94028643
102145243
111235831
12875563
135a1599
143dbb19
152c5963
hex20bbdb

2145243 has 16 divisors (see below), whose sum is σ = 2975616. Its totient is φ = 1373760.

The previous prime is 2145239. The next prime is 2145263. The reversal of 2145243 is 3425412.

It is not a de Polignac number, because 2145243 - 22 = 2145239 is a prime.

2145243 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2145263) 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 15 ways as a sum of consecutive naturals, for example, 13080 + ... + 13242.

It is an arithmetic number, because the mean of its divisors is an integer number (185976).

22145243 is an apocalyptic number.

2145243 is a deficient number, since it is larger than the sum of its proper divisors (830373).

2145243 is a wasteful number, since it uses less digits than its factorization.

2145243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314.

The product of its digits is 960, while the sum is 21.

The square root of 2145243 is about 1464.6648080704. The cubic root of 2145243 is about 128.9710288886.

The spelling of 2145243 in words is "two million, one hundred forty-five thousand, two hundred forty-three".

Divisors: 1 3 41 107 123 163 321 489 4387 6683 13161 17441 20049 52323 715081 2145243