40223352420 has 144 divisors (see below), whose sum is σ = 125407442160. Its totient is φ = 10431590400.

The previous prime is 40223352413. The next prime is 40223352439. The reversal of 40223352420 is 2425332204.

It is a happy number.

40223352420 is a `hidden beast` number, since 4 + 0 + 2 + 233 + 5 + 2 + 420 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 6863791104 + 33359561316 = 82848^2 + 182646^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 956640 + ... + 997800.

It is an arithmetic number, because the mean of its divisors is an integer number (870885015).

Almost surely, 2^40223352420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40223352420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62703721080).

40223352420 is an abundant number, since it is smaller than the sum of its proper divisors (85184089740).

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

40223352420 is a wasteful number, since it uses less digits than its factorization.

40223352420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41326 (or 41321 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 27.

Adding to 40223352420 its reverse (2425332204), we get a palindrome (42648684624).

The spelling of 40223352420 in words is "forty billion, two hundred twenty-three million, three hundred fifty-two thousand, four hundred twenty".