42389093 has 2 divisors, whose sum is σ = 42389094. Its totient is φ = 42389092.

The previous prime is 42389089. The next prime is 42389101. The reversal of 42389093 is 39098324.

42389093 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42211009 + 178084 = 6497^2 + 422^2 .

It is a cyclic number.

It is not a de Polignac number, because 42389093 - 2² = 42389089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42389003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21194546 + 21194547.

It is an arithmetic number, because the mean of its divisors is an integer number (21194547).

Almost surely, 2^42389093 is an apocalyptic number.

It is an amenable number.

42389093 is a deficient number, since it is larger than the sum of its proper divisors (1).

42389093 is an equidigital number, since it uses as much as digits as its factorization.

42389093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 42389093 is about 6510.6906699674. The cubic root of 42389093 is about 348.6727775305.

It can be divided in two parts, 4238 and 9093, that added together give a palindrome (13331).

The spelling of 42389093 in words is "forty-two million, three hundred eighty-nine thousand, ninety-three".