404040026502120 has 128 divisors (see below), whose sum is σ = 1225146151837440. Its totient is φ = 106587095408640.

The previous prime is 404040026502113. The next prime is 404040026502137. The reversal of 404040026502120 is 21205620040404.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19390014 + ... + 34410066.

It is an arithmetic number, because the mean of its divisors is an integer number (9571454311230).

Almost surely, 2^{404040026502120} is an apocalyptic number.

404040026502120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 404040026502120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612573075918720).

404040026502120 is an abundant number, since it is smaller than the sum of its proper divisors (821106125335320).

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

404040026502120 is a wasteful number, since it uses less digits than its factorization.

404040026502120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15022475 (or 15022471 counting only the distinct ones).

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

Adding to 404040026502120 its reverse (21205620040404), we get a palindrome (425245646542524).

The spelling of 404040026502120 in words is "four hundred four trillion, forty billion, twenty-six million, five hundred two thousand, one hundred twenty".