42420322237 has 2 divisors, whose sum is σ = 42420322238. Its totient is φ = 42420322236.

The previous prime is 42420322229. The next prime is 42420322247. The reversal of 42420322237 is 73222302424.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39657137881 + 2763184356 = 199141^2 + 52566^2 .

It is a cyclic number.

It is not a de Polignac number, because 42420322237 - 2³ = 42420322229 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42420322199 and 42420322208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42420322247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21210161118 + 21210161119.

It is an arithmetic number, because the mean of its divisors is an integer number (21210161119).

Almost surely, 2^42420322237 is an apocalyptic number.

It is an amenable number.

42420322237 is a deficient number, since it is larger than the sum of its proper divisors (1).

42420322237 is an equidigital number, since it uses as much as digits as its factorization.

42420322237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32256, while the sum is 31.

The spelling of 42420322237 in words is "forty-two billion, four hundred twenty million, three hundred twenty-two thousand, two hundred thirty-seven".