42812566 has 8 divisors (see below), whose sum is σ = 64451520. Its totient is φ = 21328728.

The previous prime is 42812551. The next prime is 42812593. The reversal of 42812566 is 66521824.

It is a sphenic number, since it is the product of 3 distinct 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 in 3 ways as a sum of consecutive naturals, for example, 38086 + ... + 39193.

It is an arithmetic number, because the mean of its divisors is an integer number (8056440).

Almost surely, 2^42812566 is an apocalyptic number.

42812566 is a deficient number, since it is larger than the sum of its proper divisors (21638954).

42812566 is a wasteful number, since it uses less digits than its factorization.

42812566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77558.

The product of its digits is 23040, while the sum is 34.

The square root of 42812566 is about 6543.1312076100. The cubic root of 42812566 is about 349.8300290348.

The spelling of 42812566 in words is "forty-two million, eight hundred twelve thousand, five hundred sixty-six".