404240011240 has 32 divisors (see below), whose sum is σ = 979504643880. Its totient is φ = 149257850112.

The previous prime is 404240011211. The next prime is 404240011243. The reversal of 404240011240 is 42110042404.

It can be written as a sum of positive squares in 4 ways, for example, as 311727922276 + 92512088964 = 558326^2 + 304158^2 .

It is not an unprimeable number, because it can be changed into a prime (404240011243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388691799 + ... + 388692838.

Almost surely, 2^404240011240 is an apocalyptic number.

404240011240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

404240011240 is an abundant number, since it is smaller than the sum of its proper divisors (575264632640).

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

404240011240 is a wasteful number, since it uses less digits than its factorization.

404240011240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777384661 (or 777384657 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 404240011240 its reverse (42110042404), we get a palindrome (446350053644).

The spelling of 404240011240 in words is "four hundred four billion, two hundred forty million, eleven thousand, two hundred forty".