404221243040 has 48 divisors (see below), whose sum is σ = 955087980840. Its totient is φ = 161668976640.

The previous prime is 404221243007. The next prime is 404221243061. The reversal of 404221243040 is 40342122404.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 268145837584 + 136075405456 = 517828^2 + 368884^2 .

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, 1215116 + ... + 1511604.

Almost surely, 2^404221243040 is an apocalyptic number.

404221243040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404221243040 is an abundant number, since it is smaller than the sum of its proper divisors (550866737800).

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

404221243040 is a wasteful number, since it uses less digits than its factorization.

404221243040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305025 (or 305017 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 404221243040 its reverse (40342122404), we get a palindrome (444563365444).

The spelling of 404221243040 in words is "four hundred four billion, two hundred twenty-one million, two hundred forty-three thousand, forty".