42581379 has 16 divisors (see below), whose sum is σ = 60262272. Its totient is φ = 26652288.

The previous prime is 42581377. The next prime is 42581387. The reversal of 42581379 is 97318524.

42581379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42581379 - 2¹ = 42581377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42581377) 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 15 ways as a sum of consecutive naturals, for example, 27972 + ... + 29454.

It is an arithmetic number, because the mean of its divisors is an integer number (3766392).

Almost surely, 2^42581379 is an apocalyptic number.

42581379 is a deficient number, since it is larger than the sum of its proper divisors (17680893).

42581379 is a wasteful number, since it uses less digits than its factorization.

42581379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2066.

The product of its digits is 60480, while the sum is 39.

The square root of 42581379 is about 6525.4409046439. The cubic root of 42581379 is about 349.1992004616.

The spelling of 42581379 in words is "forty-two million, five hundred eighty-one thousand, three hundred seventy-nine".