42999966 has 12 divisors (see below), whose sum is σ = 93166632. Its totient is φ = 14333316.

The previous prime is 42999947. The next prime is 42999973. The reversal of 42999966 is 66999924.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1194426 + ... + 1194461.

It is an arithmetic number, because the mean of its divisors is an integer number (7763886).

Almost surely, 2^42999966 is an apocalyptic number.

42999966 is an abundant number, since it is smaller than the sum of its proper divisors (50166666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42999966 is a wasteful number, since it uses less digits than its factorization.

42999966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388895 (or 2388892 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 54.

The square root of 42999966 is about 6557.4359318258. The cubic root of 42999966 is about 350.3397137010.

The spelling of 42999966 in words is "forty-two million, nine hundred ninety-nine thousand, nine hundred sixty-six".