42205066 has 12 divisors (see below), whose sum is σ = 64604466. Its totient is φ = 20671560.

The previous prime is 42205019. The next prime is 42205073. The reversal of 42205066 is 66050224.

It can be written as a sum of positive squares in only one way, i.e., 32251041 + 9954025 = 5679^2 + 3155^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42205066.

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, 66571 + ... + 67201.

Almost surely, 2^42205066 is an apocalyptic number.

42205066 is a deficient number, since it is larger than the sum of its proper divisors (22399400).

42205066 is an frugal number, since it uses more digits than its factorization.

42205066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 686 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 42205066 is about 6496.5426189628. The cubic root of 42205066 is about 348.1674723495.

The spelling of 42205066 in words is "forty-two million, two hundred five thousand, sixty-six".