124405 has 8 divisors (see below), whose sum is σ = 151200. Its totient is φ = 98256.

The previous prime is 124367. The next prime is 124427. The reversal of 124405 is 504421.

124405 = 107² + 108² + ... + 116².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124405 - 2⁷ = 124277 is a prime.

124405 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 606 + ... + 784.

It is an arithmetic number, because the mean of its divisors is an integer number (18900).

2¹²⁴⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

124405 is a deficient number, since it is larger than the sum of its proper divisors (26795).

124405 is a wasteful number, since it uses less digits than its factorization.

124405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 124405 is about 352.7109297995. The cubic root of 124405 is about 49.9205404572.

Adding to 124405 its sum of digits (16), we get a palindrome (124421).

Adding to 124405 its reverse (504421), we get a palindrome (628826).

It can be divided in two parts, 124 and 405, that added together give a square (529 = 23²).

The spelling of 124405 in words is "one hundred twenty-four thousand, four hundred five".