42803561 has 8 divisors (see below), whose sum is σ = 46274880. Its totient is φ = 39454128.

The previous prime is 42803539. The next prime is 42803573. The reversal of 42803561 is 16530824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42803561 - 2¹⁸ = 42541417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42803461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29741 + ... + 31146.

It is an arithmetic number, because the mean of its divisors is an integer number (5784360).

Almost surely, 2^42803561 is an apocalyptic number.

It is an amenable number.

42803561 is a deficient number, since it is larger than the sum of its proper divisors (3471319).

42803561 is a wasteful number, since it uses less digits than its factorization.

42803561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60943.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 42803561 is about 6542.4430452240. The cubic root of 42803561 is about 349.8055000970.

The spelling of 42803561 in words is "forty-two million, eight hundred three thousand, five hundred sixty-one".