42579481 has 12 divisors (see below), whose sum is σ = 50232960. Its totient is φ = 35979720.

The previous prime is 42579457. The next prime is 42579487. The reversal of 42579481 is 18497524.

It is not a de Polignac number, because 42579481 - 2⁷ = 42579353 is a prime.

It is a super-2 number, since 2×42579481² = 3626024404458722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42579487) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2641 + ... + 9598.

It is an arithmetic number, because the mean of its divisors is an integer number (4186080).

Almost surely, 2^42579481 is an apocalyptic number.

It is an amenable number.

42579481 is a deficient number, since it is larger than the sum of its proper divisors (7653479).

42579481 is a wasteful number, since it uses less digits than its factorization.

42579481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12324 (or 12317 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 42579481 is about 6525.2954722373. The cubic root of 42579481 is about 349.1940120440.

The spelling of 42579481 in words is "forty-two million, five hundred seventy-nine thousand, four hundred eighty-one".