40241221540 has 24 divisors (see below), whose sum is σ = 91007070840. Its totient is φ = 14858297088.

The previous prime is 40241221519. The next prime is 40241221597. The reversal of 40241221540 is 4512214204.

It can be written as a sum of positive squares in 4 ways, for example, as 602800704 + 39638420836 = 24552^2 + 199094^2 .

It is a super-2 number, since 2×40241221540² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77386705 + ... + 77387224.

It is an arithmetic number, because the mean of its divisors is an integer number (3791961285).

Almost surely, 2^40241221540 is an apocalyptic number.

It is an amenable number.

40241221540 is an abundant number, since it is smaller than the sum of its proper divisors (50765849300).

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

40241221540 is a wasteful number, since it uses less digits than its factorization.

40241221540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154773951 (or 154773949 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 40241221540 its reverse (4512214204), we get a palindrome (44753435744).

The spelling of 40241221540 in words is "forty billion, two hundred forty-one million, two hundred twenty-one thousand, five hundred forty".