4215287 has 4 divisors (see below), whose sum is σ = 4351296. Its totient is φ = 4079280.

The previous prime is 4215259. The next prime is 4215301. The reversal of 4215287 is 7825124.

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 4215287 - 2¹⁸ = 3953143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4215217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67958 + ... + 68019.

It is an arithmetic number, because the mean of its divisors is an integer number (1087824).

Almost surely, 2^4215287 is an apocalyptic number.

4215287 is a deficient number, since it is larger than the sum of its proper divisors (136009).

4215287 is a wasteful number, since it uses less digits than its factorization.

4215287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136008.

The product of its digits is 4480, while the sum is 29.

The square root of 4215287 is about 2053.1164117020. The cubic root of 4215287 is about 161.5383774579.

The spelling of 4215287 in words is "four million, two hundred fifteen thousand, two hundred eighty-seven".