42200066 has 4 divisors (see below), whose sum is σ = 63300102. Its totient is φ = 21100032.

The previous prime is 42200023. The next prime is 42200077. The reversal of 42200066 is 66000224.

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

It can be written as a sum of positive squares in only one way, i.e., 38180041 + 4020025 = 6179^2 + 2005^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550015 + ... + 10550018.

Almost surely, 2^42200066 is an apocalyptic number.

42200066 is a deficient number, since it is larger than the sum of its proper divisors (21100036).

42200066 is a wasteful number, since it uses less digits than its factorization.

42200066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100035.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 42200066 is about 6496.1577874925. The cubic root of 42200066 is about 348.1537227670.

The spelling of 42200066 in words is "forty-two million, two hundred thousand, sixty-six".