42066254 has 4 divisors (see below), whose sum is σ = 63099384. Its totient is φ = 21033126.

The previous prime is 42066223. The next prime is 42066257. The reversal of 42066254 is 45266024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42066257) 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 as a sum of consecutive naturals, namely, 10516562 + ... + 10516565.

It is an arithmetic number, because the mean of its divisors is an integer number (15774846).

Almost surely, 2^42066254 is an apocalyptic number.

42066254 is a deficient number, since it is larger than the sum of its proper divisors (21033130).

42066254 is a wasteful number, since it uses less digits than its factorization.

42066254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21033129.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 42066254 is about 6485.8502912109. The cubic root of 42066254 is about 347.7853467723.

The spelling of 42066254 in words is "forty-two million, sixty-six thousand, two hundred fifty-four".