420020000244 has 36 divisors (see below), whose sum is σ = 1143387779716. Its totient is φ = 129236923008.

The previous prime is 420020000237. The next prime is 420020000251. The reversal of 420020000244 is 442000020024.

420020000244 is a `hidden beast` number, since 420 + 0 + 2 + 0 + 0 + 0 + 0 + 244 = 666.

It is an interprime number because it is at equal distance from previous prime (420020000237) and next prime (420020000251).

It can be written as a sum of positive squares in 2 ways, for example, as 144407600100 + 275612400144 = 380010^2 + 524988^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 448738849 + ... + 448739784.

Almost surely, 2^420020000244 is an apocalyptic number.

It is an amenable number.

420020000244 is an abundant number, since it is smaller than the sum of its proper divisors (723367779472).

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

420020000244 is a wasteful number, since it uses less digits than its factorization.

420020000244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897478656 (or 897478651 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 420020000244 its reverse (442000020024), we get a palindrome (862020020268).

The spelling of 420020000244 in words is "four hundred twenty billion, twenty million, two hundred forty-four", and thus it is an aban number.