42444020133 has 6 divisors (see below), whose sum is σ = 61308029094. Its totient is φ = 28296013416.

The previous prime is 42444020131. The next prime is 42444020137. The reversal of 42444020133 is 33102044424.

It is a happy number.

42444020133 is a `hidden beast` number, since 4 + 244 + 402 + 0 + 13 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 21875297409 + 20568722724 = 147903^2 + 143418^2 .

It is not a de Polignac number, because 42444020133 - 2¹ = 42444020131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42444020097 and 42444020106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42444020131) 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 5 ways as a sum of consecutive naturals, for example, 2358001110 + ... + 2358001127.

It is an arithmetic number, because the mean of its divisors is an integer number (10218004849).

Almost surely, 2^42444020133 is an apocalyptic number.

It is an amenable number.

42444020133 is a deficient number, since it is larger than the sum of its proper divisors (18864008961).

42444020133 is a wasteful number, since it uses less digits than its factorization.

42444020133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4716002243 (or 4716002240 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 42444020133 its reverse (33102044424), we get a palindrome (75546064557).

The spelling of 42444020133 in words is "forty-two billion, four hundred forty-four million, twenty thousand, one hundred thirty-three".