42437189 has 2 divisors, whose sum is σ = 42437190. Its totient is φ = 42437188.

The previous prime is 42437159. The next prime is 42437201. The reversal of 42437189 is 98173424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34692100 + 7745089 = 5890^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 42437189 - 2¹² = 42433093 is a prime.

It is equal to p_2572589 and since 42437189 and 2572589 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42437119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21218594 + 21218595.

It is an arithmetic number, because the mean of its divisors is an integer number (21218595).

Almost surely, 2^42437189 is an apocalyptic number.

It is an amenable number.

42437189 is a deficient number, since it is larger than the sum of its proper divisors (1).

42437189 is an equidigital number, since it uses as much as digits as its factorization.

42437189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 42437189 is about 6514.3832401848. The cubic root of 42437189 is about 348.8045993917.

The spelling of 42437189 in words is "forty-two million, four hundred thirty-seven thousand, one hundred eighty-nine".