42544202237 has 2 divisors, whose sum is σ = 42544202238. Its totient is φ = 42544202236.

The previous prime is 42544202219. The next prime is 42544202273. The reversal of 42544202237 is 73220244524.

Together with next prime (42544202273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36152839321 + 6391362916 = 190139^2 + 79946^2 .

It is a cyclic number.

It is not a de Polignac number, because 42544202237 - 2⁸ = 42544201981 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42544202197 and 42544202206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42544202837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21272101118 + 21272101119.

It is an arithmetic number, because the mean of its divisors is an integer number (21272101119).

Almost surely, 2^42544202237 is an apocalyptic number.

It is an amenable number.

42544202237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42544202237 is an equidigital number, since it uses as much as digits as its factorization.

42544202237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107520, while the sum is 35.

The spelling of 42544202237 in words is "forty-two billion, five hundred forty-four million, two hundred two thousand, two hundred thirty-seven".