142697161 has 2 divisors, whose sum is σ = 142697162. Its totient is φ = 142697160.

The previous prime is 142697131. The next prime is 142697173. The reversal of 142697161 is 161796241.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142659136 + 38025 = 11944^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 142697161 - 2⁷ = 142697033 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142697161.

It is not a weakly prime, because it can be changed into another prime (142697111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71348580 + 71348581.

It is an arithmetic number, because the mean of its divisors is an integer number (71348581).

Almost surely, 2^142697161 is an apocalyptic number.

It is an amenable number.

142697161 is a deficient number, since it is larger than the sum of its proper divisors (1).

142697161 is an equidigital number, since it uses as much as digits as its factorization.

142697161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 37.

The square root of 142697161 is about 11945.5916973585. The cubic root of 142697161 is about 522.5627448439.

The spelling of 142697161 in words is "one hundred forty-two million, six hundred ninety-seven thousand, one hundred sixty-one".