40302430343221 has 4 divisors (see below), whose sum is σ = 40672177410700. Its totient is φ = 39932683275744.

The previous prime is 40302430343213. The next prime is 40302430343233. The reversal of 40302430343221 is 12234303420304.

It is a happy number.

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 21749295540996 + 18553134802225 = 4663614^2 + 4307335^2 .

It is a cyclic number.

It is not a de Polignac number, because 40302430343221 - 2³ = 40302430343213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40302430343521) 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 3 ways as a sum of consecutive naturals, for example, 184873533576 + ... + 184873533793.

It is an arithmetic number, because the mean of its divisors is an integer number (10168044352675).

Almost surely, 2^{40302430343221} is an apocalyptic number.

It is an amenable number.

40302430343221 is a deficient number, since it is larger than the sum of its proper divisors (369747067479).

40302430343221 is a wasteful number, since it uses less digits than its factorization.

40302430343221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369747067478.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 40302430343221 its reverse (12234303420304), we get a palindrome (52536733763525).

The spelling of 40302430343221 in words is "forty trillion, three hundred two billion, four hundred thirty million, three hundred forty-three thousand, two hundred twenty-one".