42404044237 has 2 divisors, whose sum is σ = 42404044238. Its totient is φ = 42404044236.

The previous prime is 42404044223. The next prime is 42404044247. The reversal of 42404044237 is 73244040424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34722222921 + 7681821316 = 186339^2 + 87646^2 .

It is a cyclic number.

It is not a de Polignac number, because 42404044237 - 2¹¹ = 42404042189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42404044247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21202022118 + 21202022119.

It is an arithmetic number, because the mean of its divisors is an integer number (21202022119).

Almost surely, 2^42404044237 is an apocalyptic number.

It is an amenable number.

42404044237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42404044237 is an equidigital number, since it uses as much as digits as its factorization.

42404044237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 34.

The spelling of 42404044237 in words is "forty-two billion, four hundred four million, forty-four thousand, two hundred thirty-seven".