142870111 has 2 divisors, whose sum is σ = 142870112. Its totient is φ = 142870110.

The previous prime is 142870097. The next prime is 142870121. The reversal of 142870111 is 111078241.

It is a strong prime.

It is an emirp because it is prime and its reverse (111078241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142870111 - 2⁷ = 142869983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142870121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71435055 + 71435056.

It is an arithmetic number, because the mean of its divisors is an integer number (71435056).

Almost surely, 2^142870111 is an apocalyptic number.

142870111 is a deficient number, since it is larger than the sum of its proper divisors (1).

142870111 is an equidigital number, since it uses as much as digits as its factorization.

142870111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 142870111 is about 11952.8285773703. The cubic root of 142870111 is about 522.7737762292.

The spelling of 142870111 in words is "one hundred forty-two million, eight hundred seventy thousand, one hundred eleven".