142865215 has 4 divisors (see below), whose sum is σ = 171438264. Its totient is φ = 114292168.

The previous prime is 142865209. The next prime is 142865231. The reversal of 142865215 is 512568241.

It is a happy number.

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 142865215 - 2¹¹ = 142863167 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, 14286517 + ... + 14286526.

It is an arithmetic number, because the mean of its divisors is an integer number (42859566).

Almost surely, 2^142865215 is an apocalyptic number.

142865215 is a deficient number, since it is larger than the sum of its proper divisors (28573049).

142865215 is an equidigital number, since it uses as much as digits as its factorization.

142865215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28573048.

The product of its digits is 19200, while the sum is 34.

The square root of 142865215 is about 11952.6237705367. The cubic root of 142865215 is about 522.7678045354.

The spelling of 142865215 in words is "one hundred forty-two million, eight hundred sixty-five thousand, two hundred fifteen".