561862242 has 54 divisors (see below), whose sum is σ = 1259499969. Its totient is φ = 181018800.

The previous prime is 561862229. The next prime is 561862247. The reversal of 561862242 is 242268165.

It is a happy number.

561862242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 453306681 + 108555561 = 21291^2 + 10419^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=16761.

Its product of digits (46080) is a multiple of the sum of its prime factors (384).

It is a junction number, because it is equal to n+sod(n) for n = 561862197 and 561862206.

It is not an unprimeable number, because it can be changed into a prime (561862247) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3720867 + ... + 3721017.

Almost surely, 2^561862242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561862242

561862242 is an abundant number, since it is smaller than the sum of its proper divisors (697637727).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561862242 is a wasteful number, since it uses less digits than its factorization.

561862242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384 (or 193 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 561862242 is about 23703.6335189354. The cubic root of 561862242 is about 825.1697193528.

The spelling of 561862242 in words is "five hundred sixty-one million, eight hundred sixty-two thousand, two hundred forty-two".