142861877 has 2 divisors, whose sum is σ = 142861878. Its totient is φ = 142861876.

The previous prime is 142861861. The next prime is 142861903. The reversal of 142861877 is 778168241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133656721 + 9205156 = 11561^2 + 3034^2 .

It is a cyclic number.

It is not a de Polignac number, because 142861877 - 2⁴ = 142861861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142861577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71430938 + 71430939.

It is an arithmetic number, because the mean of its divisors is an integer number (71430939).

Almost surely, 2^142861877 is an apocalyptic number.

It is an amenable number.

142861877 is a deficient number, since it is larger than the sum of its proper divisors (1).

142861877 is an equidigital number, since it uses as much as digits as its factorization.

142861877 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 150528, while the sum is 44.

The square root of 142861877 is about 11952.4841351076. The cubic root of 142861877 is about 522.7637330696.

The spelling of 142861877 in words is "one hundred forty-two million, eight hundred sixty-one thousand, eight hundred seventy-seven".