42223561 has 8 divisors (see below), whose sum is σ = 44254080. Its totient is φ = 40209312.

The previous prime is 42223553. The next prime is 42223583. The reversal of 42223561 is 16532224.

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 42223561 - 2³ = 42223553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42223261) 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 7 ways as a sum of consecutive naturals, for example, 1420 + ... + 9298.

It is an arithmetic number, because the mean of its divisors is an integer number (5531760).

Almost surely, 2^42223561 is an apocalyptic number.

It is an amenable number.

42223561 is a deficient number, since it is larger than the sum of its proper divisors (2030519).

42223561 is a wasteful number, since it uses less digits than its factorization.

42223561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135.

The product of its digits is 2880, while the sum is 25.

The square root of 42223561 is about 6497.9659124991. The cubic root of 42223561 is about 348.2183226196.

Adding to 42223561 its reverse (16532224), we get a palindrome (58755785).

The spelling of 42223561 in words is "forty-two million, two hundred twenty-three thousand, five hundred sixty-one".