561142108 has 24 divisors (see below), whose sum is σ = 990380160. Its totient is φ = 278185920.

The previous prime is 561142073. The next prime is 561142117. The reversal of 561142108 is 801241165.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318133 + ... + 319891.

It is an arithmetic number, because the mean of its divisors is an integer number (41265840).

Almost surely, 2^561142108 is an apocalyptic number.

It is an amenable number.

561142108 is a deficient number, since it is larger than the sum of its proper divisors (429238052).

561142108 is a wasteful number, since it uses less digits than its factorization.

561142108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2397 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 561142108 is about 23688.4382769316. The cubic root of 561142108 is about 824.8170309881.

The spelling of 561142108 in words is "five hundred sixty-one million, one hundred forty-two thousand, one hundred eight".