42215205 has 8 divisors (see below), whose sum is σ = 67544352. Its totient is φ = 22514768.

The previous prime is 42215191. The next prime is 42215219. The reversal of 42215205 is 50251224.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (42215191) and next prime (42215219).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42215205 - 2⁶ = 42215141 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1407159 + ... + 1407188.

It is an arithmetic number, because the mean of its divisors is an integer number (8443044).

Almost surely, 2^42215205 is an apocalyptic number.

It is an amenable number.

42215205 is a deficient number, since it is larger than the sum of its proper divisors (25329147).

42215205 is a wasteful number, since it uses less digits than its factorization.

42215205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2814355.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 42215205 is about 6497.3229102454. The cubic root of 42215205 is about 348.1953504196.

Adding to 42215205 its reverse (50251224), we get a palindrome (92466429).

The spelling of 42215205 in words is "forty-two million, two hundred fifteen thousand, two hundred five".