42554966 has 16 divisors (see below), whose sum is σ = 65620800. Its totient is φ = 20685120.

The previous prime is 42554947. The next prime is 42554969. The reversal of 42554966 is 66945524.

It is a happy number.

It is a super-2 number, since 2×42554966² = 3621850262522312, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42554969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27875 + ... + 29361.

It is an arithmetic number, because the mean of its divisors is an integer number (4101300).

Almost surely, 2^42554966 is an apocalyptic number.

42554966 is a deficient number, since it is larger than the sum of its proper divisors (23065834).

42554966 is a wasteful number, since it uses less digits than its factorization.

42554966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1879.

The product of its digits is 259200, while the sum is 41.

The square root of 42554966 is about 6523.4167427813. The cubic root of 42554966 is about 349.1269834000.

Subtracting from 42554966 its sum of digits (41), we obtain a triangular number (42554925 = T₉₂₂₅).

The spelling of 42554966 in words is "forty-two million, five hundred fifty-four thousand, nine hundred sixty-six".