142444277 has 2 divisors, whose sum is σ = 142444278. Its totient is φ = 142444276.

The previous prime is 142444249. The next prime is 142444279. The reversal of 142444277 is 772444241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93528241 + 48916036 = 9671^2 + 6994^2 .

It is an emirp because it is prime and its reverse (772444241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142444277 - 2⁶ = 142444213 is a prime.

Together with 142444279, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142444279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71222138 + 71222139.

It is an arithmetic number, because the mean of its divisors is an integer number (71222139).

Almost surely, 2^142444277 is an apocalyptic number.

It is an amenable number.

142444277 is a deficient number, since it is larger than the sum of its proper divisors (1).

142444277 is an equidigital number, since it uses as much as digits as its factorization.

142444277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 50176, while the sum is 35.

The square root of 142444277 is about 11935.0021784665. The cubic root of 142444277 is about 522.2538718524.

The spelling of 142444277 in words is "one hundred forty-two million, four hundred forty-four thousand, two hundred seventy-seven".