42816554 has 8 divisors (see below), whose sum is σ = 70063488. Its totient is φ = 19462060.

The previous prime is 42816541. The next prime is 42816559. The reversal of 42816554 is 45561824.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42816559) 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 3 ways as a sum of consecutive naturals, for example, 973082 + ... + 973125.

It is an arithmetic number, because the mean of its divisors is an integer number (8757936).

Almost surely, 2^42816554 is an apocalyptic number.

42816554 is a deficient number, since it is larger than the sum of its proper divisors (27246934).

42816554 is a wasteful number, since it uses less digits than its factorization.

42816554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946220.

The product of its digits is 38400, while the sum is 35.

The square root of 42816554 is about 6543.4359475737. The cubic root of 42816554 is about 349.8408909457.

The spelling of 42816554 in words is "forty-two million, eight hundred sixteen thousand, five hundred fifty-four".