42554666 has 32 divisors (see below), whose sum is σ = 80203392. Its totient is φ = 16450560.

The previous prime is 42554663. The next prime is 42554683. The reversal of 42554666 is 66645524.

It is not an unprimeable number, because it can be changed into a prime (42554663) 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 15 ways as a sum of consecutive naturals, for example, 20090 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (2506356).

Almost surely, 2^42554666 is an apocalyptic number.

42554666 is a deficient number, since it is larger than the sum of its proper divisors (37648726).

42554666 is a wasteful number, since it uses less digits than its factorization.

42554666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2174.

The product of its digits is 172800, while the sum is 38.

The square root of 42554666 is about 6523.3937486557. The cubic root of 42554666 is about 349.1261629839.

The spelling of 42554666 in words is "forty-two million, five hundred fifty-four thousand, six hundred sixty-six".