42205412 has 12 divisors (see below), whose sum is σ = 75070716. Its totient is φ = 20756640.

The previous prime is 42205381. The next prime is 42205421. The reversal of 42205412 is 21450224.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1577536 + 40627876 = 1256^2 + 6374^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86243 + ... + 86730.

It is an arithmetic number, because the mean of its divisors is an integer number (6255893).

Almost surely, 2^42205412 is an apocalyptic number.

It is an amenable number.

42205412 is a deficient number, since it is larger than the sum of its proper divisors (32865304).

42205412 is a wasteful number, since it uses less digits than its factorization.

42205412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173038 (or 173036 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 42205412 is about 6496.5692484572. The cubic root of 42205412 is about 348.1684237805.

Adding to 42205412 its reverse (21450224), we get a palindrome (63655636).

The spelling of 42205412 in words is "forty-two million, two hundred five thousand, four hundred twelve".