42561533 has 8 divisors (see below), whose sum is σ = 48687168. Its totient is φ = 36447264.

The previous prime is 42561527. The next prime is 42561551. The reversal of 42561533 is 33516524.

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

It is not a de Polignac number, because 42561533 - 2⁴ = 42561517 is a prime.

It is a super-2 number, since 2×42561533² = 3622968182620178, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42561496 and 42561505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42561503) 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, 7910 + ... + 12152.

It is an arithmetic number, because the mean of its divisors is an integer number (6085896).

Almost surely, 2^42561533 is an apocalyptic number.

It is an amenable number.

42561533 is a deficient number, since it is larger than the sum of its proper divisors (6125635).

42561533 is a wasteful number, since it uses less digits than its factorization.

42561533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5683.

The product of its digits is 10800, while the sum is 29.

The square root of 42561533 is about 6523.9200638880. The cubic root of 42561533 is about 349.1449413431.

The spelling of 42561533 in words is "forty-two million, five hundred sixty-one thousand, five hundred thirty-three".