142212515 has 8 divisors (see below), whose sum is σ = 173875248. Its totient is φ = 111623200.

The previous prime is 142212509. The next prime is 142212517. The reversal of 142212515 is 515212241.

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

It is not a de Polignac number, because 142212515 - 2¹⁰ = 142211491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142212517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268061 + ... + 268590.

It is an arithmetic number, because the mean of its divisors is an integer number (21734406).

Almost surely, 2^142212515 is an apocalyptic number.

142212515 is a deficient number, since it is larger than the sum of its proper divisors (31662733).

142212515 is an equidigital number, since it uses as much as digits as its factorization.

142212515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536709.

The product of its digits is 800, while the sum is 23.

The square root of 142212515 is about 11925.2888853897. The cubic root of 142212515 is about 521.9704761075.

Adding to 142212515 its reverse (515212241), we get a palindrome (657424756).

The spelling of 142212515 in words is "one hundred forty-two million, two hundred twelve thousand, five hundred fifteen".