42362561 has 4 divisors (see below), whose sum is σ = 42773952. Its totient is φ = 41951172.

The previous prime is 42362549. The next prime is 42362563. The reversal of 42362561 is 16526324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42362561 - 2¹⁰ = 42361537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42362563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205541 + ... + 205746.

It is an arithmetic number, because the mean of its divisors is an integer number (10693488).

Almost surely, 2^42362561 is an apocalyptic number.

It is an amenable number.

42362561 is a deficient number, since it is larger than the sum of its proper divisors (411391).

42362561 is a wasteful number, since it uses less digits than its factorization.

42362561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411390.

The product of its digits is 8640, while the sum is 29.

The square root of 42362561 is about 6508.6527791856. The cubic root of 42362561 is about 348.6000157557.

Adding to 42362561 its reverse (16526324), we get a palindrome (58888885).

The spelling of 42362561 in words is "forty-two million, three hundred sixty-two thousand, five hundred sixty-one".