40121024544420 has 192 divisors, whose sum is σ = 117413439736320. Its totient is φ = 10223395725312.

The previous prime is 40121024544413. The next prime is 40121024544439. The reversal of 40121024544420 is 2444542012104.

It is a super-2 number, since 2×40121024544420² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293314764 + ... + 293451516.

It is an arithmetic number, because the mean of its divisors is an integer number (611528331960).

Almost surely, 2^{40121024544420} 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 40121024544420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58706719868160).

40121024544420 is an abundant number, since it is smaller than the sum of its proper divisors (77292415191900).

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

40121024544420 is a wasteful number, since it uses less digits than its factorization.

40121024544420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138534 (or 138532 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 33.

Adding to 40121024544420 its reverse (2444542012104), we get a palindrome (42565566556524).

The spelling of 40121024544420 in words is "forty trillion, one hundred twenty-one billion, twenty-four million, five hundred forty-four thousand, four hundred twenty".