404021424031 has 4 divisors (see below), whose sum is σ = 404104271112. Its totient is φ = 403938576952.

The previous prime is 404021424029. The next prime is 404021424041. The reversal of 404021424031 is 130424120404.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 404021424031 - 2¹ = 404021424029 is a prime.

It is a super-2 number, since 2×404021424031² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 404021423987 and 404021424005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404021424011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41416225 + ... + 41425978.

It is an arithmetic number, because the mean of its divisors is an integer number (101026067778).

Almost surely, 2^404021424031 is an apocalyptic number.

404021424031 is a deficient number, since it is larger than the sum of its proper divisors (82847081).

404021424031 is an equidigital number, since it uses as much as digits as its factorization.

404021424031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82847080.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 404021424031 its reverse (130424120404), we get a palindrome (534445544435).

The spelling of 404021424031 in words is "four hundred four billion, twenty-one million, four hundred twenty-four thousand, thirty-one".