40124021320 has 64 divisors (see below), whose sum is σ = 90909555840. Its totient is φ = 15937689600.

The previous prime is 40124021303. The next prime is 40124021321. The reversal of 40124021320 is 2312042104.

It is not an unprimeable number, because it can be changed into a prime (40124021321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11936440 + ... + 11939800.

It is an arithmetic number, because the mean of its divisors is an integer number (1420461810).

Almost surely, 2^40124021320 is an apocalyptic number.

40124021320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40124021320 is an abundant number, since it is smaller than the sum of its proper divisors (50785534520).

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

40124021320 is a wasteful number, since it uses less digits than its factorization.

40124021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5366 (or 5362 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40124021320 its reverse (2312042104), we get a palindrome (42436063424).

The spelling of 40124021320 in words is "forty billion, one hundred twenty-four million, twenty-one thousand, three hundred twenty".