561946142 has 16 divisors (see below), whose sum is σ = 852230400. Its totient is φ = 277885080.

The previous prime is 561946141. The next prime is 561946157. The reversal of 561946142 is 241649165.

It is a junction number, because it is equal to n+sod(n) for n = 561946096 and 561946105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561946141) by changing a digit.

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, 71609 + ... + 79067.

It is an arithmetic number, because the mean of its divisors is an integer number (53264400).

Almost surely, 2^561946142 is an apocalyptic number.

561946142 is a deficient number, since it is larger than the sum of its proper divisors (290284258).

561946142 is a wasteful number, since it uses less digits than its factorization.

561946142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871.

The product of its digits is 51840, while the sum is 38.

The square root of 561946142 is about 23705.4032237378. The cubic root of 561946142 is about 825.2107900926.

The spelling of 561946142 in words is "five hundred sixty-one million, nine hundred forty-six thousand, one hundred forty-two".