406424 has 16 divisors (see below), whose sum is σ = 771120. Its totient is φ = 200800.

The previous prime is 406423. The next prime is 406447. The reversal of 406424 is 424604.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 406396 and 406405.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406424.

It is not an unprimeable number, because it can be changed into a prime (406423) 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, 557 + ... + 1059.

It is an arithmetic number, because the mean of its divisors is an integer number (48195).

2⁴⁰⁶⁴²⁴ is an apocalyptic number.

It is an amenable number.

406424 is a deficient number, since it is larger than the sum of its proper divisors (364696).

406424 is a wasteful number, since it uses less digits than its factorization.

406424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610 (or 606 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 406424 is about 637.5139214166. The cubic root of 406424 is about 74.0729740330.

The spelling of 406424 in words is "four hundred six thousand, four hundred twenty-four".