404120344032340 has 24 divisors (see below), whose sum is σ = 913933701119880. Its totient is φ = 149213665488768.

The previous prime is 404120344032313. The next prime is 404120344032437. The reversal of 404120344032340 is 43230443021404.

It can be written as a sum of positive squares in 4 ways, for example, as 79092954870084 + 325027389162256 = 8893422^2 + 18028516^2 .

It is a junction number, because it is equal to n+sod(n) for n = 404120344032296 and 404120344032305.

It is a congruent number.

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, 777154507495 + ... + 777154508014.

It is an arithmetic number, because the mean of its divisors is an integer number (38080570879995).

Almost surely, 2^{404120344032340} is an apocalyptic number.

It is an amenable number.

404120344032340 is an abundant number, since it is smaller than the sum of its proper divisors (509813357087540).

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

404120344032340 is a wasteful number, since it uses less digits than its factorization.

404120344032340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1554309015531 (or 1554309015529 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 34.

Adding to 404120344032340 its reverse (43230443021404), we get a palindrome (447350787053744).

The spelling of 404120344032340 in words is "four hundred four trillion, one hundred twenty billion, three hundred forty-four million, thirty-two thousand, three hundred forty".