42437 has 2 divisors, whose sum is σ = 42438. Its totient is φ = 42436.

The previous prime is 42433. The next prime is 42443. The reversal of 42437 is 73424.

It is a happy number.

42437 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 206²+1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42436 + 1 = 206^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 42437 - 2² = 42433 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42437.

It is not a weakly prime, because it can be changed into another prime (42433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218 + 21219.

It is an arithmetic number, because the mean of its divisors is an integer number (21219).

2⁴²⁴³⁷ is an apocalyptic number.

It is an amenable number.

42437 is a deficient number, since it is larger than the sum of its proper divisors (1).

42437 is an equidigital number, since it uses as much as digits as its factorization.

42437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 20.

The square root of 42437 is about 206.0024271702. The cubic root of 42437 is about 34.8804081574.

The spelling of 42437 in words is "forty-two thousand, four hundred thirty-seven".