42520463 has 4 divisors (see below), whose sum is σ = 42549768. Its totient is φ = 42491160.

The previous prime is 42520447. The next prime is 42520487. The reversal of 42520463 is 36402524.

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

It is a cyclic number.

It is not a de Polignac number, because 42520463 - 2⁴ = 42520447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42520433) 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, 12356 + ... + 15417.

It is an arithmetic number, because the mean of its divisors is an integer number (10637442).

Almost surely, 2^42520463 is an apocalyptic number.

42520463 is a deficient number, since it is larger than the sum of its proper divisors (29305).

42520463 is a wasteful number, since it uses less digits than its factorization.

42520463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29304.

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 42520463 is about 6520.7716567903. The cubic root of 42520463 is about 349.0326020507.

Adding to 42520463 its reverse (36402524), we get a palindrome (78922987).

The spelling of 42520463 in words is "forty-two million, five hundred twenty thousand, four hundred sixty-three".