404542210440 has 64 divisors (see below), whose sum is σ = 1220641876800. Its totient is φ = 107254345472.

The previous prime is 404542210439. The next prime is 404542210441. The reversal of 404542210440 is 44012245404.

It is an interprime number because it is at equal distance from previous prime (404542210439) and next prime (404542210441).

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

It is a junction number, because it is equal to n+sod(n) for n = 404542210398 and 404542210407.

It is not an unprimeable number, because it can be changed into a prime (404542210441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9722550 + ... + 9764069.

It is an arithmetic number, because the mean of its divisors is an integer number (19072529325).

Almost surely, 2^404542210440 is an apocalyptic number.

404542210440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404542210440 is an abundant number, since it is smaller than the sum of its proper divisors (816099666360).

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

404542210440 is a wasteful number, since it uses less digits than its factorization.

404542210440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19486806 (or 19486802 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 30.

Adding to 404542210440 its reverse (44012245404), we get a palindrome (448554455844).

The spelling of 404542210440 in words is "four hundred four billion, five hundred forty-two million, two hundred ten thousand, four hundred forty".