561227842 has 32 divisors (see below), whose sum is σ = 979190784. Its totient is φ = 236293200.

The previous prime is 561227839. The next prime is 561227861. The reversal of 561227842 is 248722165.

It is a happy number.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187417 + ... + 190387.

It is an arithmetic number, because the mean of its divisors is an integer number (30599712).

Almost surely, 2^561227842 is an apocalyptic number.

561227842 is a deficient number, since it is larger than the sum of its proper divisors (417962942).

561227842 is a wasteful number, since it uses less digits than its factorization.

561227842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214.

The product of its digits is 53760, while the sum is 37.

The square root of 561227842 is about 23690.2478247907. The cubic root of 561227842 is about 824.8590353582.

The spelling of 561227842 in words is "five hundred sixty-one million, two hundred twenty-seven thousand, eight hundred forty-two".