801223555442 has 6 divisors (see below), whose sum is σ = 1201837231983. Its totient is φ = 400611144782.

The previous prime is 801223555441. The next prime is 801223555541. The reversal of 801223555442 is 244555322108.

It is a happy number.

801223555442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 400611777721 + 400611777721 = 632939^2 + 632939^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=632939.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 801223555442.

It is not an unprimeable number, because it can be changed into a prime (801223555441) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 949409 + ... + 1582347.

Almost surely, 2^801223555442 is an apocalyptic number.

801223555442 is a deficient number, since it is larger than the sum of its proper divisors (400613676541).

801223555442 is an frugal number, since it uses more digits than its factorization.

801223555442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1265880 (or 632941 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 41.

The spelling of 801223555442 in words is "eight hundred one billion, two hundred twenty-three million, five hundred fifty-five thousand, four hundred forty-two".