143742161 has 2 divisors, whose sum is σ = 143742162. Its totient is φ = 143742160.

The previous prime is 143742103. The next prime is 143742167. The reversal of 143742161 is 161247341.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 137710225 + 6031936 = 11735^2 + 2456^2 .

It is a cyclic number.

It is not a de Polignac number, because 143742161 - 2⁶ = 143742097 is a prime.

It is not a weakly prime, because it can be changed into another prime (143742167) 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, 71871080 + 71871081.

It is an arithmetic number, because the mean of its divisors is an integer number (71871081).

Almost surely, 2^143742161 is an apocalyptic number.

It is an amenable number.

143742161 is a deficient number, since it is larger than the sum of its proper divisors (1).

143742161 is an equidigital number, since it uses as much as digits as its factorization.

143742161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 143742161 is about 11989.2518949266. The cubic root of 143742161 is about 523.8352542812.

The spelling of 143742161 in words is "one hundred forty-three million, seven hundred forty-two thousand, one hundred sixty-one".