40120311024 has 120 divisors (see below), whose sum is σ = 113209173792. Its totient is φ = 13263206400.

The previous prime is 40120311017. The next prime is 40120311031. The reversal of 40120311024 is 42011302104.

It is an interprime number because it is at equal distance from previous prime (40120311017) and next prime (40120311031).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 40120310988 and 40120311006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18633532 + ... + 18635684.

Almost surely, 2^40120311024 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 40120311024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56604586896).

40120311024 is an abundant number, since it is smaller than the sum of its proper divisors (73088862768).

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

40120311024 is a wasteful number, since it uses less digits than its factorization.

40120311024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3175 (or 3166 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 40120311024 its reverse (42011302104), we get a palindrome (82131613128).

The spelling of 40120311024 in words is "forty billion, one hundred twenty million, three hundred eleven thousand, twenty-four".