42732889 has 2 divisors, whose sum is σ = 42732890. Its totient is φ = 42732888.

The previous prime is 42732887. The next prime is 42732901. The reversal of 42732889 is 98823724.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25857225 + 16875664 = 5085^2 + 4108^2 .

It is a cyclic number.

It is not a de Polignac number, because 42732889 - 2¹ = 42732887 is a prime.

Together with 42732887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (42732887) 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, 21366444 + 21366445.

It is an arithmetic number, because the mean of its divisors is an integer number (21366445).

Almost surely, 2^42732889 is an apocalyptic number.

It is an amenable number.

42732889 is a deficient number, since it is larger than the sum of its proper divisors (1).

42732889 is an equidigital number, since it uses as much as digits as its factorization.

42732889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 42732889 is about 6537.0397734755. The cubic root of 42732889 is about 349.6128753722.

The spelling of 42732889 in words is "forty-two million, seven hundred thirty-two thousand, eight hundred eighty-nine".