404021425310040 has 128 divisors (see below), whose sum is σ = 1215270310633920. Its totient is φ = 107454365491200.

The previous prime is 404021425310023. The next prime is 404021425310057. The reversal of 404021425310040 is 40013524120404.

It is an interprime number because it is at equal distance from previous prime (404021425310023) and next prime (404021425310057).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 84000412 + ... + 88679828.

Almost surely, 2^{404021425310040} is an apocalyptic number.

404021425310040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404021425310040 is an abundant number, since it is smaller than the sum of its proper divisors (811248885323880).

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

404021425310040 is a wasteful number, since it uses less digits than its factorization.

404021425310040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4681333 (or 4681329 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 404021425310040 its reverse (40013524120404), we get a palindrome (444034949430444).

The spelling of 404021425310040 in words is "four hundred four trillion, twenty-one billion, four hundred twenty-five million, three hundred ten thousand, forty".