42215204 has 6 divisors (see below), whose sum is σ = 73876614. Its totient is φ = 21107600.

The previous prime is 42215191. The next prime is 42215219. The reversal of 42215204 is 40251224.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 37847104 + 4368100 = 6152^2 + 2090^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5276897 + ... + 5276904.

It is an arithmetic number, because the mean of its divisors is an integer number (12312769).

Almost surely, 2^42215204 is an apocalyptic number.

It is an amenable number.

42215204 is a deficient number, since it is larger than the sum of its proper divisors (31661410).

42215204 is a wasteful number, since it uses less digits than its factorization.

42215204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10553805 (or 10553803 counting only the distinct ones).

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

The square root of 42215204 is about 6497.3228332906. The cubic root of 42215204 is about 348.1953476702.

Adding to 42215204 its reverse (40251224), we get a palindrome (82466428).

The spelling of 42215204 in words is "forty-two million, two hundred fifteen thousand, two hundred four".