40821124090 has 16 divisors (see below), whose sum is σ = 73652563080. Its totient is φ = 16289663040.

The previous prime is 40821124087. The next prime is 40821124111. The reversal of 40821124090 is 9042112804.

It can be written as a sum of positive squares in 4 ways, for example, as 7510128921 + 33310995169 = 86661^2 + 182513^2 .

It is a super-4 number, since 4×40821124090⁴ (a number of 44 digits) contains 4444 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, 4843905 + ... + 4852324.

Almost surely, 2^40821124090 is an apocalyptic number.

40821124090 is a deficient number, since it is larger than the sum of its proper divisors (32831438990).

40821124090 is a wasteful number, since it uses less digits than its factorization.

40821124090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9696657.

The product of its (nonzero) digits is 4608, while the sum is 31.

Adding to 40821124090 its reverse (9042112804), we get a palindrome (49863236894).

The spelling of 40821124090 in words is "forty billion, eight hundred twenty-one million, one hundred twenty-four thousand, ninety".