3520030120040 has 128 divisors (see below), whose sum is σ = 9532018656000. Its totient is φ = 1142854023168.

The previous prime is 3520030120039. The next prime is 3520030120111. The reversal of 3520030120040 is 400210300253.

It is a happy number.

It is a super-2 number, since 2×3520030120040² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3520030119994 and 3520030120021.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12269756 + ... + 12553364.

It is an arithmetic number, because the mean of its divisors is an integer number (74468895750).

Almost surely, 2^{3520030120040} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3520030120040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4766009328000).

3520030120040 is an abundant number, since it is smaller than the sum of its proper divisors (6011988535960).

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

3520030120040 is a wasteful number, since it uses less digits than its factorization.

3520030120040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285979 (or 285975 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

Adding to 3520030120040 its reverse (400210300253), we get a palindrome (3920240420293).

The spelling of 3520030120040 in words is "three trillion, five hundred twenty billion, thirty million, one hundred twenty thousand, forty".