142334143979809 has 2 divisors, whose sum is σ = 142334143979810. Its totient is φ = 142334143979808.

The previous prime is 142334143979737. The next prime is 142334143979821. The reversal of 142334143979809 is 908979341433241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105986448480784 + 36347695499025 = 10294972^2 + 6028905^2 .

It is a cyclic number.

It is not a de Polignac number, because 142334143979809 - 2¹⁷ = 142334143848737 is a prime.

It is not a weakly prime, because it can be changed into another prime (142334143979879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71167071989904 + 71167071989905.

It is an arithmetic number, because the mean of its divisors is an integer number (71167071989905).

Almost surely, 2^{142334143979809} is an apocalyptic number.

It is an amenable number.

142334143979809 is a deficient number, since it is larger than the sum of its proper divisors (1).

142334143979809 is an equidigital number, since it uses as much as digits as its factorization.

142334143979809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141087744, while the sum is 67.

The spelling of 142334143979809 in words is "one hundred forty-two trillion, three hundred thirty-four billion, one hundred forty-three million, nine hundred seventy-nine thousand, eight hundred nine".