561342142 has 16 divisors (see below), whose sum is σ = 892870992. Its totient is φ = 263767680.

The previous prime is 561342139. The next prime is 561342151. The reversal of 561342142 is 241243165.

It is a self number, because there is not a number n which added to its sum of digits gives 561342142.

It is a congruent number.

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, 11548 + ... + 35440.

It is an arithmetic number, because the mean of its divisors is an integer number (55804437).

Almost surely, 2^561342142 is an apocalyptic number.

561342142 is a deficient number, since it is larger than the sum of its proper divisors (331528850).

561342142 is a wasteful number, since it uses less digits than its factorization.

561342142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24603.

The product of its digits is 5760, while the sum is 28.

The square root of 561342142 is about 23692.6600870396. The cubic root of 561342142 is about 824.9150286530.

The spelling of 561342142 in words is "five hundred sixty-one million, three hundred forty-two thousand, one hundred forty-two".