404021424342 has 32 divisors (see below), whose sum is σ = 809960659200. Its totient is φ = 134354293920.

The previous prime is 404021424319. The next prime is 404021424361. The reversal of 404021424342 is 243424120404.

It is a super-2 number, since 2×404021424342² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17134653 + ... + 17158215.

It is an arithmetic number, because the mean of its divisors is an integer number (25311270600).

Almost surely, 2^404021424342 is an apocalyptic number.

404021424342 is an abundant number, since it is smaller than the sum of its proper divisors (405939234858).

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

404021424342 is a wasteful number, since it uses less digits than its factorization.

404021424342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30228.

The product of its (nonzero) digits is 24576, while the sum is 30.

Adding to 404021424342 its reverse (243424120404), we get a palindrome (647445544746).

The spelling of 404021424342 in words is "four hundred four billion, twenty-one million, four hundred twenty-four thousand, three hundred forty-two".