4020534215 has 16 divisors (see below), whose sum is σ = 4896223200. Its totient is φ = 3169037952.

The previous prime is 4020534211. The next prime is 4020534229. The reversal of 4020534215 is 5124350204.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 4020534215 - 2² = 4020534211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4020534211) 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, 76949 + ... + 118161.

It is an arithmetic number, because the mean of its divisors is an integer number (306013950).

Almost surely, 2^4020534215 is an apocalyptic number.

4020534215 is a deficient number, since it is larger than the sum of its proper divisors (875688985).

4020534215 is a wasteful number, since it uses less digits than its factorization.

4020534215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41506.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 4020534215 is about 63407.6826181181. The cubic root of 4020534215 is about 1590.1127532345.

Adding to 4020534215 its reverse (5124350204), we get a palindrome (9144884419).

The spelling of 4020534215 in words is "four billion, twenty million, five hundred thirty-four thousand, two hundred fifteen".