42533566 has 4 divisors (see below), whose sum is σ = 63800352. Its totient is φ = 21266782.

The previous prime is 42533551. The next prime is 42533573. The reversal of 42533566 is 66533524.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 10633390 + ... + 10633393.

It is an arithmetic number, because the mean of its divisors is an integer number (15950088).

Almost surely, 2^42533566 is an apocalyptic number.

42533566 is a deficient number, since it is larger than the sum of its proper divisors (21266786).

42533566 is a wasteful number, since it uses less digits than its factorization.

42533566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21266785.

The product of its digits is 64800, while the sum is 34.

The square root of 42533566 is about 6521.7762917782. The cubic root of 42533566 is about 349.0684507077.

The spelling of 42533566 in words is "forty-two million, five hundred thirty-three thousand, five hundred sixty-six".