142856377 has 2 divisors, whose sum is σ = 142856378. Its totient is φ = 142856376.

The previous prime is 142856353. The next prime is 142856387. The reversal of 142856377 is 773658241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114511401 + 28344976 = 10701^2 + 5324^2 .

It is an emirp because it is prime and its reverse (773658241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142856377 - 2⁷ = 142856249 is a prime.

It is a super-2 number, since 2×142856377² = 40815888899132258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (142856347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71428188 + 71428189.

It is an arithmetic number, because the mean of its divisors is an integer number (71428189).

Almost surely, 2^142856377 is an apocalyptic number.

It is an amenable number.

142856377 is a deficient number, since it is larger than the sum of its proper divisors (1).

142856377 is an equidigital number, since it uses as much as digits as its factorization.

142856377 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 43.

The square root of 142856377 is about 11952.2540551981. The cubic root of 142856377 is about 522.7570244046.

The spelling of 142856377 in words is "one hundred forty-two million, eight hundred fifty-six thousand, three hundred seventy-seven".