142193161 has 4 divisors (see below), whose sum is σ = 155119824. Its totient is φ = 129266500.

The previous prime is 142193159. The next prime is 142193201. The reversal of 142193161 is 161391241.

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 not a de Polignac number, because 142193161 - 2¹ = 142193159 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142193101) 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, 6463315 + ... + 6463336.

It is an arithmetic number, because the mean of its divisors is an integer number (38779956).

Almost surely, 2^142193161 is an apocalyptic number.

142193161 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142193161 is a deficient number, since it is larger than the sum of its proper divisors (12926663).

142193161 is a wasteful number, since it uses less digits than its factorization.

142193161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12926662.

The product of its digits is 1296, while the sum is 28.

The square root of 142193161 is about 11924.4773889676. The cubic root of 142193161 is about 521.9467963469.

The spelling of 142193161 in words is "one hundred forty-two million, one hundred ninety-three thousand, one hundred sixty-one".