42569481 has 24 divisors (see below), whose sum is σ = 62544960. Its totient is φ = 25701984.

The previous prime is 42569459. The next prime is 42569489. The reversal of 42569481 is 18496524.

It is not a de Polignac number, because 42569481 - 2⁷ = 42569353 is a prime.

It is a super-2 number, since 2×42569481² = 3624321425218722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42569489) 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 in 23 ways as a sum of consecutive naturals, for example, 24055 + ... + 25763.

It is an arithmetic number, because the mean of its divisors is an integer number (2606040).

Almost surely, 2^42569481 is an apocalyptic number.

It is an amenable number.

42569481 is a deficient number, since it is larger than the sum of its proper divisors (19975479).

42569481 is a wasteful number, since it uses less digits than its factorization.

42569481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773 (or 1754 counting only the distinct ones).

The product of its digits is 69120, while the sum is 39.

The square root of 42569481 is about 6524.5291784159. The cubic root of 42569481 is about 349.1666732614.

The spelling of 42569481 in words is "forty-two million, five hundred sixty-nine thousand, four hundred eighty-one".