40124240220 has 24 divisors (see below), whose sum is σ = 112347872784. Its totient is φ = 10699797376.

The previous prime is 40124240207. The next prime is 40124240227. The reversal of 40124240220 is 2204242104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40124240227) 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 7 ways as a sum of consecutive naturals, for example, 334368609 + ... + 334368728.

It is an arithmetic number, because the mean of its divisors is an integer number (4681161366).

Almost surely, 2^40124240220 is an apocalyptic number.

It is an amenable number.

40124240220 is an abundant number, since it is smaller than the sum of its proper divisors (72223632564).

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

40124240220 is a wasteful number, since it uses less digits than its factorization.

40124240220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 668737349 (or 668737347 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

Adding to 40124240220 its reverse (2204242104), we get a palindrome (42328482324).

The spelling of 40124240220 in words is "forty billion, one hundred twenty-four million, two hundred forty thousand, two hundred twenty".