42719569 has 4 divisors (see below), whose sum is σ = 43628544. Its totient is φ = 41810596.

The previous prime is 42719557. The next prime is 42719609. The reversal of 42719569 is 96591724.

It is a happy number.

42719569 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42719569 - 2⁹ = 42719057 is a prime.

It is a super-2 number, since 2×42719569² = 3649923151091522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42719549) 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, 454417 + ... + 454510.

It is an arithmetic number, because the mean of its divisors is an integer number (10907136).

Almost surely, 2^42719569 is an apocalyptic number.

It is an amenable number.

42719569 is a deficient number, since it is larger than the sum of its proper divisors (908975).

42719569 is an equidigital number, since it uses as much as digits as its factorization.

42719569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908974.

The product of its digits is 136080, while the sum is 43.

The square root of 42719569 is about 6536.0208842996. The cubic root of 42719569 is about 349.5765463873.

The spelling of 42719569 in words is "forty-two million, seven hundred nineteen thousand, five hundred sixty-nine".