42789523 has 4 divisors (see below), whose sum is σ = 48902320. Its totient is φ = 36676728.

The previous prime is 42789521. The next prime is 42789547. The reversal of 42789523 is 32598724.

42789523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42789523 - 2¹ = 42789521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42789521) 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 in 3 ways as a sum of consecutive naturals, for example, 3056388 + ... + 3056401.

It is an arithmetic number, because the mean of its divisors is an integer number (12225580).

Almost surely, 2^42789523 is an apocalyptic number.

42789523 is a deficient number, since it is larger than the sum of its proper divisors (6112797).

42789523 is an equidigital number, since it uses as much as digits as its factorization.

42789523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6112796.

The product of its digits is 120960, while the sum is 40.

The square root of 42789523 is about 6541.3701164206. The cubic root of 42789523 is about 349.7672547857.

The spelling of 42789523 in words is "forty-two million, seven hundred eighty-nine thousand, five hundred twenty-three".