42063215 has 4 divisors (see below), whose sum is σ = 50475864. Its totient is φ = 33650568.

The previous prime is 42063211. The next prime is 42063223. The reversal of 42063215 is 51236024.

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

It is a cyclic number.

It is not a de Polignac number, because 42063215 - 2² = 42063211 is a prime.

It is a super-2 number, since 2×42063215² = 3538628112272450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42063211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4206317 + ... + 4206326.

It is an arithmetic number, because the mean of its divisors is an integer number (12618966).

Almost surely, 2^42063215 is an apocalyptic number.

42063215 is a deficient number, since it is larger than the sum of its proper divisors (8412649).

42063215 is an equidigital number, since it uses as much as digits as its factorization.

42063215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8412648.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 42063215 is about 6485.6160077513. The cubic root of 42063215 is about 347.7769715307.

Adding to 42063215 its reverse (51236024), we get a palindrome (93299239).

The spelling of 42063215 in words is "forty-two million, sixty-three thousand, two hundred fifteen".