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124007 = 139539
BaseRepresentation
bin11110010001100111
320022002212
4132101213
512432012
62354035
71024352
oct362147
9208085
10124007
1185194
125b91b
13445a0
1433299
1526b22
hex1e467

124007 has 4 divisors (see below), whose sum is σ = 133560. Its totient is φ = 114456.

The previous prime is 124001. The next prime is 124021. The reversal of 124007 is 700421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 700421 = 1395039.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-124007 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123982 and 124000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4757 + ... + 4782.

It is an arithmetic number, because the mean of its divisors is an integer number (33390).

2124007 is an apocalyptic number.

124007 is a deficient number, since it is larger than the sum of its proper divisors (9553).

124007 is an equidigital number, since it uses as much as digits as its factorization.

124007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9552.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 124007 is about 352.1462764250. The cubic root of 124007 is about 49.8672478493.

Adding to 124007 its reverse (700421), we get a palindrome (824428).

It can be divided in two parts, 12 and 4007, that multiplied together give a palindrome (48084).

The spelling of 124007 in words is "one hundred twenty-four thousand, seven", and thus it is an iban number.

Divisors: 1 13 9539 124007