42989966 has 8 divisors (see below), whose sum is σ = 64725480. Its totient is φ = 21414808.

The previous prime is 42989959. The next prime is 42989971. The reversal of 42989966 is 66998924.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39416 + ... + 40491.

It is an arithmetic number, because the mean of its divisors is an integer number (8090685).

Almost surely, 2^42989966 is an apocalyptic number.

42989966 is a deficient number, since it is larger than the sum of its proper divisors (21735514).

42989966 is a wasteful number, since it uses less digits than its factorization.

42989966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80178.

The product of its digits is 1679616, while the sum is 53.

The square root of 42989966 is about 6556.6733943365. The cubic root of 42989966 is about 350.3125534567.

The spelling of 42989966 in words is "forty-two million, nine hundred eighty-nine thousand, nine hundred sixty-six".