404000042020 has 24 divisors (see below), whose sum is σ = 875767834368. Its totient is φ = 156387112800.

The previous prime is 404000042009. The next prime is 404000042041. The reversal of 404000042020 is 20240000404.

It is a super-3 number, since 3×404000042020³ (a number of 36 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 404000041985 and 404000042003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325805866 + ... + 325807105.

It is an arithmetic number, because the mean of its divisors is an integer number (36490326432).

Almost surely, 2^404000042020 is an apocalyptic number.

It is an amenable number.

404000042020 is an abundant number, since it is smaller than the sum of its proper divisors (471767792348).

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

404000042020 is a wasteful number, since it uses less digits than its factorization.

404000042020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651613011 (or 651613009 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 404000042020 its reverse (20240000404), we get a palindrome (424240042424).

The spelling of 404000042020 in words is "four hundred four billion, forty-two thousand, twenty".