142277239 has 16 divisors (see below), whose sum is σ = 157696000. Its totient is φ = 127534176.

The previous prime is 142277231. The next prime is 142277273. The reversal of 142277239 is 932772241.

It is a cyclic number.

It is not a de Polignac number, because 142277239 - 2³ = 142277231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142277198 and 142277207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142277231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110602 + ... + 111880.

It is an arithmetic number, because the mean of its divisors is an integer number (9856000).

Almost surely, 2^142277239 is an apocalyptic number.

142277239 is a deficient number, since it is larger than the sum of its proper divisors (15418761).

142277239 is a wasteful number, since it uses less digits than its factorization.

142277239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1534.

The product of its digits is 42336, while the sum is 37.

The square root of 142277239 is about 11928.0023054994. The cubic root of 142277239 is about 522.0496507922.

The spelling of 142277239 in words is "one hundred forty-two million, two hundred seventy-seven thousand, two hundred thirty-nine".