404124042 has 16 divisors (see below), whose sum is σ = 923712192. Its totient is φ = 115464000.

The previous prime is 404124041. The next prime is 404124043. The reversal of 404124042 is 240421404.

It is an interprime number because it is at equal distance from previous prime (404124041) and next prime (404124043).

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

It is not an unprimeable number, because it can be changed into a prime (404124041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4810959 + ... + 4811042.

It is an arithmetic number, because the mean of its divisors is an integer number (57732012).

Almost surely, 2^404124042 is an apocalyptic number.

404124042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

404124042 is an abundant number, since it is smaller than the sum of its proper divisors (519588150).

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

404124042 is a wasteful number, since it uses less digits than its factorization.

404124042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9622013.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 404124042 is about 20102.8366655057. The cubic root of 404124042 is about 739.3298303130.

Adding to 404124042 its reverse (240421404), we get a palindrome (644545446).

The spelling of 404124042 in words is "four hundred four million, one hundred twenty-four thousand, forty-two".