40330142221 has 4 divisors (see below), whose sum is σ = 40354483132. Its totient is φ = 40305801312.

The previous prime is 40330142201. The next prime is 40330142227. The reversal of 40330142221 is 12224103304.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4963202500 + 35366939721 = 70450^2 + 188061^2 .

It is a cyclic number.

It is not a de Polignac number, because 40330142221 - 2⁷ = 40330142093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40330142192 and 40330142201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40330142227) 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 3 ways as a sum of consecutive naturals, for example, 12167970 + ... + 12171283.

It is an arithmetic number, because the mean of its divisors is an integer number (10088620783).

Almost surely, 2^40330142221 is an apocalyptic number.

It is an amenable number.

40330142221 is a deficient number, since it is larger than the sum of its proper divisors (24340911).

40330142221 is a wasteful number, since it uses less digits than its factorization.

40330142221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24340910.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40330142221 its reverse (12224103304), we get a palindrome (52554245525).

The spelling of 40330142221 in words is "forty billion, three hundred thirty million, one hundred forty-two thousand, two hundred twenty-one".