Search a number
-
+
124881 = 341627
BaseRepresentation
bin11110011111010001
320100022020
4132133101
512444011
62402053
71030041
oct363721
9210266
10124881
1185909
1260329
1344ac3
1433721
1527006
hex1e7d1

124881 has 4 divisors (see below), whose sum is σ = 166512. Its totient is φ = 83252.

The previous prime is 124853. The next prime is 124897. The reversal of 124881 is 188421.

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 124881 - 27 = 124753 is a prime.

It is a super-2 number, since 2×1248812 = 31190528322, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (124181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20811 + ... + 20816.

It is an arithmetic number, because the mean of its divisors is an integer number (41628).

2124881 is an apocalyptic number.

124881 is the 224-th centered pentagonal number.

It is an amenable number.

124881 is a deficient number, since it is larger than the sum of its proper divisors (41631).

124881 is an equidigital number, since it uses as much as digits as its factorization.

124881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41630.

The product of its digits is 512, while the sum is 24.

The square root of 124881 is about 353.3850591069. The cubic root of 124881 is about 49.9841282956.

The spelling of 124881 in words is "one hundred twenty-four thousand, eight hundred eighty-one".

Divisors: 1 3 41627 124881