142163761 has 2 divisors, whose sum is σ = 142163762. Its totient is φ = 142163760.

The previous prime is 142163753. The next prime is 142163773. The reversal of 142163761 is 167361241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90611361 + 51552400 = 9519^2 + 7180^2 .

It is a cyclic number.

It is not a de Polignac number, because 142163761 - 2³ = 142163753 is a prime.

It is not a weakly prime, because it can be changed into another prime (142163561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71081880 + 71081881.

It is an arithmetic number, because the mean of its divisors is an integer number (71081881).

Almost surely, 2^142163761 is an apocalyptic number.

It is an amenable number.

142163761 is a deficient number, since it is larger than the sum of its proper divisors (1).

142163761 is an equidigital number, since it uses as much as digits as its factorization.

142163761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 31.

The square root of 142163761 is about 11923.2445668115. The cubic root of 142163761 is about 521.9108211204.

The spelling of 142163761 in words is "one hundred forty-two million, one hundred sixty-three thousand, seven hundred sixty-one".