142247215 has 8 divisors (see below), whose sum is σ = 186214608. Its totient is φ = 103452480.

The previous prime is 142247213. The next prime is 142247219. The reversal of 142247215 is 512742241.

142247215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 142247215 - 2¹ = 142247213 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 (142247213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1293102 + ... + 1293211.

It is an arithmetic number, because the mean of its divisors is an integer number (23276826).

Almost surely, 2^142247215 is an apocalyptic number.

142247215 is a deficient number, since it is larger than the sum of its proper divisors (43967393).

142247215 is a wasteful number, since it uses less digits than its factorization.

142247215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2586329.

The product of its digits is 4480, while the sum is 28.

The square root of 142247215 is about 11926.7436880315. The cubic root of 142247215 is about 522.0129264328.

Adding to 142247215 its reverse (512742241), we get a palindrome (654989456).

The spelling of 142247215 in words is "one hundred forty-two million, two hundred forty-seven thousand, two hundred fifteen".