142231277 has 4 divisors (see below), whose sum is σ = 144914940. Its totient is φ = 139547616.

The previous prime is 142231273. The next prime is 142231289. The reversal of 142231277 is 772132241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111915241 + 30316036 = 10579^2 + 5506^2 .

It is a cyclic number.

It is not a de Polignac number, because 142231277 - 2² = 142231273 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 (142231273) 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, 1341752 + ... + 1341857.

It is an arithmetic number, because the mean of its divisors is an integer number (36228735).

Almost surely, 2^142231277 is an apocalyptic number.

It is an amenable number.

142231277 is a deficient number, since it is larger than the sum of its proper divisors (2683663).

142231277 is an equidigital number, since it uses as much as digits as its factorization.

142231277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2683662.

The product of its digits is 4704, while the sum is 29.

The square root of 142231277 is about 11926.0755070560. The cubic root of 142231277 is about 521.9934295009.

The spelling of 142231277 in words is "one hundred forty-two million, two hundred thirty-one thousand, two hundred seventy-seven".