142168751 has 2 divisors, whose sum is σ = 142168752. Its totient is φ = 142168750.

The previous prime is 142168721. The next prime is 142168787. The reversal of 142168751 is 157861241.

It is a weak prime.

It is an emirp because it is prime and its reverse (157861241) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 142168751 - 2¹⁸ = 141906607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (142168721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71084375 + 71084376.

It is an arithmetic number, because the mean of its divisors is an integer number (71084376).

Almost surely, 2^142168751 is an apocalyptic number.

142168751 is a deficient number, since it is larger than the sum of its proper divisors (1).

142168751 is an equidigital number, since it uses as much as digits as its factorization.

142168751 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 35.

The square root of 142168751 is about 11923.4538200976. The cubic root of 142168751 is about 521.9169274692.

The spelling of 142168751 in words is "one hundred forty-two million, one hundred sixty-eight thousand, seven hundred fifty-one".