4142121215 has 4 divisors (see below), whose sum is σ = 4970545464. Its totient is φ = 3313696968.

The previous prime is 4142121209. The next prime is 4142121223. The reversal of 4142121215 is 5121212414.

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 4142121215 - 2⁴ = 4142121199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 414212117 + ... + 414212126.

It is an arithmetic number, because the mean of its divisors is an integer number (1242636366).

Almost surely, 2^4142121215 is an apocalyptic number.

4142121215 is a deficient number, since it is larger than the sum of its proper divisors (828424249).

4142121215 is an equidigital number, since it uses as much as digits as its factorization.

4142121215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828424248.

The product of its digits is 640, while the sum is 23.

The square root of 4142121215 is about 64359.3133509052. The cubic root of 4142121215 is about 1605.9829662223.

Adding to 4142121215 its reverse (5121212414), we get a palindrome (9263333629).

The spelling of 4142121215 in words is "four billion, one hundred forty-two million, one hundred twenty-one thousand, two hundred fifteen".