42235285237 has 2 divisors, whose sum is σ = 42235285238. Its totient is φ = 42235285236.

The previous prime is 42235285199. The next prime is 42235285249. The reversal of 42235285237 is 73258253224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40839963921 + 1395321316 = 202089^2 + 37354^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42235285237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42235285193 and 42235285202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42235285637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21117642618 + 21117642619.

It is an arithmetic number, because the mean of its divisors is an integer number (21117642619).

Almost surely, 2^42235285237 is an apocalyptic number.

It is an amenable number.

42235285237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42235285237 is an equidigital number, since it uses as much as digits as its factorization.

42235285237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 43.

The spelling of 42235285237 in words is "forty-two billion, two hundred thirty-five million, two hundred eighty-five thousand, two hundred thirty-seven".