42023389 has 2 divisors, whose sum is σ = 42023390. Its totient is φ = 42023388.

The previous prime is 42023381. The next prime is 42023413. The reversal of 42023389 is 98332024.

42023389 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., 36060025 + 5963364 = 6005^2 + 2442^2 .

It is a cyclic number.

It is not a de Polignac number, because 42023389 - 2³ = 42023381 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42023389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42023381) 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, 21011694 + 21011695.

It is an arithmetic number, because the mean of its divisors is an integer number (21011695).

Almost surely, 2^42023389 is an apocalyptic number.

It is an amenable number.

42023389 is a deficient number, since it is larger than the sum of its proper divisors (1).

42023389 is an equidigital number, since it uses as much as digits as its factorization.

42023389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 42023389 is about 6482.5449477809. The cubic root of 42023389 is about 347.6671769492.

The spelling of 42023389 in words is "forty-two million, twenty-three thousand, three hundred eighty-nine".