406245 has 32 divisors (see below), whose sum is σ = 767232. Its totient is φ = 179712.

The previous prime is 406207. The next prime is 406247. The reversal of 406245 is 542604.

It is a happy number.

It is not a de Polignac number, because 406245 - 2⁷ = 406117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5529 + ... + 5601.

It is an arithmetic number, because the mean of its divisors is an integer number (23976).

2⁴⁰⁶²⁴⁵ is an apocalyptic number.

It is an amenable number.

406245 is a deficient number, since it is larger than the sum of its proper divisors (360987).

406245 is a wasteful number, since it uses less digits than its factorization.

406245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 406245 is about 637.3735168643. The cubic root of 406245 is about 74.0620978632.

Adding to 406245 its reverse (542604), we get a palindrome (948849).

The spelling of 406245 in words is "four hundred six thousand, two hundred forty-five".