40021105450 has 24 divisors (see below), whose sum is σ = 74536127820. Its totient is φ = 15987609600.

The previous prime is 40021105387. The next prime is 40021105457. The reversal of 40021105450 is 5450112004.

It can be written as a sum of positive squares in 6 ways, for example, as 25807458609 + 14213646841 = 160647^2 + 119221^2 .

It is not an unprimeable number, because it can be changed into a prime (40021105457) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 481981 + ... + 558880.

Almost surely, 2^40021105450 is an apocalyptic number.

40021105450 is a deficient number, since it is larger than the sum of its proper divisors (34515022370).

40021105450 is a wasteful number, since it uses less digits than its factorization.

40021105450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041642 (or 1041637 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

Adding to 40021105450 its reverse (5450112004), we get a palindrome (45471217454).

The spelling of 40021105450 in words is "forty billion, twenty-one million, one hundred five thousand, four hundred fifty".