406123 has 2 divisors, whose sum is σ = 406124. Its totient is φ = 406122.

The previous prime is 406117. The next prime is 406169. The reversal of 406123 is 321604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406123 - 2⁹ = 405611 is a prime.

It is a super-2 number, since 2×406123² = 329871782258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 406097 and 406106.

It is not a weakly prime, because it can be changed into another prime (406183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203061 + 203062.

It is an arithmetic number, because the mean of its divisors is an integer number (203062).

2⁴⁰⁶¹²³ is an apocalyptic number.

406123 is a deficient number, since it is larger than the sum of its proper divisors (1).

406123 is an equidigital number, since it uses as much as digits as its factorization.

406123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 406123 is about 637.2778044150. The cubic root of 406123 is about 74.0546832238.

Adding to 406123 its reverse (321604), we get a palindrome (727727).

It can be divided in two parts, 406 and 123, that added together give a square (529 = 23²).

The spelling of 406123 in words is "four hundred six thousand, one hundred twenty-three".