42520043 has 8 divisors (see below), whose sum is σ = 47391120. Its totient is φ = 37912320.

The previous prime is 42520039. The next prime is 42520057. The reversal of 42520043 is 34002524.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42520043 - 2² = 42520039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42519997 and 42520024.

It is not an unprimeable number, because it can be changed into a prime (42520063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65498 + ... + 66143.

It is an arithmetic number, because the mean of its divisors is an integer number (5923890).

Almost surely, 2^42520043 is an apocalyptic number.

42520043 is a deficient number, since it is larger than the sum of its proper divisors (4871077).

42520043 is a wasteful number, since it uses less digits than its factorization.

42520043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131677.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 42520043 is about 6520.7394519333. The cubic root of 42520043 is about 349.0314528457.

Adding to 42520043 its reverse (34002524), we get a palindrome (76522567).

The spelling of 42520043 in words is "forty-two million, five hundred twenty thousand, forty-three".