405124 has 6 divisors (see below), whose sum is σ = 708974. Its totient is φ = 202560.

The previous prime is 405091. The next prime is 405143. The reversal of 405124 is 421504.

It can be written as a sum of positive squares in only one way, i.e., 230400 + 174724 = 480^2 + 418^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 405098 and 405107.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50637 + ... + 50644.

2⁴⁰⁵¹²⁴ is an apocalyptic number.

It is an amenable number.

405124 is a deficient number, since it is larger than the sum of its proper divisors (303850).

405124 is a wasteful number, since it uses less digits than its factorization.

405124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101285 (or 101283 counting only the distinct ones).

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

The square root of 405124 is about 636.4935192129. The cubic root of 405124 is about 73.9939123310.

Adding to 405124 its reverse (421504), we get a palindrome (826628).

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

The spelling of 405124 in words is "four hundred five thousand, one hundred twenty-four".