406243340 has 24 divisors (see below), whose sum is σ = 855214080. Its totient is φ = 162096768.

The previous prime is 406243333. The next prime is 406243381. The reversal of 406243340 is 43342604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16652 + ... + 33011.

It is an arithmetic number, because the mean of its divisors is an integer number (35633920).

Almost surely, 2^406243340 is an apocalyptic number.

It is an amenable number.

406243340 is an abundant number, since it is smaller than the sum of its proper divisors (448970740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406243340 is a wasteful number, since it uses less digits than its factorization.

406243340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50081 (or 50079 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 406243340 is about 20155.4791558028. The cubic root of 406243340 is about 740.6199698543.

Adding to 406243340 its reverse (43342604), we get a palindrome (449585944).

The spelling of 406243340 in words is "four hundred six million, two hundred forty-three thousand, three hundred forty".