43420001242 has 8 divisors (see below), whose sum is σ = 65135643156. Its totient is φ = 21708120192.

The previous prime is 43420001203. The next prime is 43420001249. The reversal of 43420001242 is 24210002434.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41733995521 + 1686005721 = 204289^2 + 41061^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (43420001249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 911173 + ... + 957640.

Almost surely, 2^43420001242 is an apocalyptic number.

43420001242 is a deficient number, since it is larger than the sum of its proper divisors (21715641914).

43420001242 is a wasteful number, since it uses less digits than its factorization.

43420001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880432.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 43420001242 its reverse (24210002434), we get a palindrome (67630003676).

The spelling of 43420001242 in words is "forty-three billion, four hundred twenty million, one thousand, two hundred forty-two".