42815211 has 16 divisors (see below), whose sum is σ = 58216704. Its totient is φ = 27982944.

The previous prime is 42815209. The next prime is 42815219. The reversal of 42815211 is 11251824.

It is not a de Polignac number, because 42815211 - 2¹ = 42815209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42815219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58530 + ... + 59256.

It is an arithmetic number, because the mean of its divisors is an integer number (3638544).

Almost surely, 2^42815211 is an apocalyptic number.

42815211 is a deficient number, since it is larger than the sum of its proper divisors (15401493).

42815211 is a wasteful number, since it uses less digits than its factorization.

42815211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090.

The product of its digits is 640, while the sum is 24.

The square root of 42815211 is about 6543.3333248429. Note that the first 4 decimals coincide. The cubic root of 42815211 is about 349.8372331609.

The spelling of 42815211 in words is "forty-two million, eight hundred fifteen thousand, two hundred eleven".