Search a number
-
+
124807 = 137911
BaseRepresentation
bin11110011110000111
320100012111
4132132013
512443212
62401451
71026604
oct363607
9210174
10124807
1185851
1260287
1344a67
14336ab
1526ea7
hex1e787

124807 has 4 divisors (see below), whose sum is σ = 125856. Its totient is φ = 123760.

The previous prime is 124799. The next prime is 124819. The reversal of 124807 is 708421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 708421 = 7101203.

It is a cyclic number.

It is not a de Polignac number, because 124807 - 23 = 124799 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

124807 is a lucky number.

It is a plaindrome in base 14.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124847) 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, 319 + ... + 592.

It is an arithmetic number, because the mean of its divisors is an integer number (31464).

2124807 is an apocalyptic number.

124807 is a deficient number, since it is larger than the sum of its proper divisors (1049).

124807 is an equidigital number, since it uses as much as digits as its factorization.

124807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 124807 is about 353.2803419382. The cubic root of 124807 is about 49.9742534112.

The spelling of 124807 in words is "one hundred twenty-four thousand, eight hundred seven".

Divisors: 1 137 911 124807