142164161 has 4 divisors (see below), whose sum is σ = 142689024. Its totient is φ = 141639300.

The previous prime is 142164157. The next prime is 142164227. The reversal of 142164161 is 161461241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 142164161 - 2² = 142164157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142164161.

It is not an unprimeable number, because it can be changed into a prime (142164661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262025 + ... + 262566.

It is an arithmetic number, because the mean of its divisors is an integer number (35672256).

Almost surely, 2^142164161 is an apocalyptic number.

It is an amenable number.

142164161 is a deficient number, since it is larger than the sum of its proper divisors (524863).

142164161 is an equidigital number, since it uses as much as digits as its factorization.

142164161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524862.

The product of its digits is 1152, while the sum is 26.

The square root of 142164161 is about 11923.2613407574. The cubic root of 142164161 is about 521.9113106125.

The spelling of 142164161 in words is "one hundred forty-two million, one hundred sixty-four thousand, one hundred sixty-one".