42024505 has 4 divisors (see below), whose sum is σ = 50429412. Its totient is φ = 33619600.

The previous prime is 42024503. The next prime is 42024511. The reversal of 42024505 is 50542024.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11587216 + 30437289 = 3404^2 + 5517^2 .

It is not a de Polignac number, because 42024505 - 2¹ = 42024503 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42024503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4202446 + ... + 4202455.

It is an arithmetic number, because the mean of its divisors is an integer number (12607353).

Almost surely, 2^42024505 is an apocalyptic number.

It is an amenable number.

42024505 is a deficient number, since it is larger than the sum of its proper divisors (8404907).

42024505 is an equidigital number, since it uses as much as digits as its factorization.

42024505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404906.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 42024505 is about 6482.6310245147. The cubic root of 42024505 is about 347.6702545459.

Adding to 42024505 its reverse (50542024), we get a palindrome (92566529).

The spelling of 42024505 in words is "forty-two million, twenty-four thousand, five hundred five".