561197042 has 16 divisors (see below), whose sum is σ = 984426432. Its totient is φ = 234919440.

The previous prime is 561197029. The next prime is 561197051. The reversal of 561197042 is 240791165.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 561196993 and 561197011.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 465509 + ... + 466712.

It is an arithmetic number, because the mean of its divisors is an integer number (61526652).

Almost surely, 2^561197042 is an apocalyptic number.

561197042 is a deficient number, since it is larger than the sum of its proper divisors (423229390).

561197042 is a wasteful number, since it uses less digits than its factorization.

561197042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932273.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 561197042 is about 23689.5977593542. The cubic root of 561197042 is about 824.8439457510.

The spelling of 561197042 in words is "five hundred sixty-one million, one hundred ninety-seven thousand, forty-two".