142788227 has 4 divisors (see below), whose sum is σ = 142911336. Its totient is φ = 142665120.

The previous prime is 142788197. The next prime is 142788241. The reversal of 142788227 is 722887241.

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 142788227 - 2²⁰ = 141739651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142788727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59798 + ... + 62139.

It is an arithmetic number, because the mean of its divisors is an integer number (35727834).

Almost surely, 2^142788227 is an apocalyptic number.

142788227 is a deficient number, since it is larger than the sum of its proper divisors (123109).

142788227 is a wasteful number, since it uses less digits than its factorization.

142788227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123108.

The product of its digits is 100352, while the sum is 41.

The square root of 142788227 is about 11949.4027884242. The cubic root of 142788227 is about 522.6738836572.

The spelling of 142788227 in words is "one hundred forty-two million, seven hundred eighty-eight thousand, two hundred twenty-seven".