42015215 has 8 divisors (see below), whose sum is σ = 55001808. Its totient is φ = 30556480.

The previous prime is 42015179. The next prime is 42015247. The reversal of 42015215 is 51251024.

42015215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 42015215 - 2⁶ = 42015151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381902 + ... + 382011.

It is an arithmetic number, because the mean of its divisors is an integer number (6875226).

Almost surely, 2^42015215 is an apocalyptic number.

42015215 is a deficient number, since it is larger than the sum of its proper divisors (12986593).

42015215 is a wasteful number, since it uses less digits than its factorization.

42015215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763929.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 42015215 is about 6481.9144548505. The cubic root of 42015215 is about 347.6446338222.

Adding to 42015215 its reverse (51251024), we get a palindrome (93266239).

The spelling of 42015215 in words is "forty-two million, fifteen thousand, two hundred fifteen".