40420034144 has 72 divisors (see below), whose sum is σ = 92954069208. Its totient is φ = 17250831360.

The previous prime is 40420034119. The next prime is 40420034159. The reversal of 40420034144 is 44143002404.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 324407 + ... + 431369.

It is an arithmetic number, because the mean of its divisors is an integer number (1291028739).

Almost surely, 2^40420034144 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 40420034144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46477034604).

40420034144 is an abundant number, since it is smaller than the sum of its proper divisors (52534035064).

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

40420034144 is a wasteful number, since it uses less digits than its factorization.

40420034144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107228 (or 107213 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 40420034144 its reverse (44143002404), we get a palindrome (84563036548).

The spelling of 40420034144 in words is "forty billion, four hundred twenty million, thirty-four thousand, one hundred forty-four".