168142343 has 4 divisors (see below), whose sum is σ = 176991960. Its totient is φ = 159292728.

The previous prime is 168142339. The next prime is 168142349. The reversal of 168142343 is 343241861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343241861 = 173 ⋅1984057.

It is a cyclic number.

It is not a de Polignac number, because 168142343 - 2² = 168142339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168142349) 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 in 3 ways as a sum of consecutive naturals, for example, 4424780 + ... + 4424817.

It is an arithmetic number, because the mean of its divisors is an integer number (44247990).

Almost surely, 2^168142343 is an apocalyptic number.

168142343 is a deficient number, since it is larger than the sum of its proper divisors (8849617).

168142343 is an equidigital number, since it uses as much as digits as its factorization.

168142343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8849616.

The product of its digits is 13824, while the sum is 32.

The square root of 168142343 is about 12966.9712346407. The cubic root of 168142343 is about 551.9406299919.

The spelling of 168142343 in words is "one hundred sixty-eight million, one hundred forty-two thousand, three hundred forty-three".