561214642 has 16 divisors (see below), whose sum is σ = 913083192. Its totient is φ = 257658880.

The previous prime is 561214637. The next prime is 561214649. The reversal of 561214642 is 246412165.

It is a happy number.

561214642 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 4 ways, for example, as 487923921 + 73290721 = 22089^2 + 8561^2 .

It is not an unprimeable number, because it can be changed into a prime (561214649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199903 + ... + 202690.

Almost surely, 2^561214642 is an apocalyptic number.

561214642 is a deficient number, since it is larger than the sum of its proper divisors (351868550).

561214642 is a wasteful number, since it uses less digits than its factorization.

561214642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402653.

The product of its digits is 11520, while the sum is 31.

The square root of 561214642 is about 23689.9692275022. The cubic root of 561214642 is about 824.8525684513.

The spelling of 561214642 in words is "five hundred sixty-one million, two hundred fourteen thousand, six hundred forty-two".