142230212161 has 4 divisors (see below), whose sum is σ = 142551274032. Its totient is φ = 141909150292.

The previous prime is 142230212153. The next prime is 142230212171. The reversal of 142230212161 is 161212032241.

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, and also an emirpimes, since its reverse is a distinct semiprime: 161212032241 = 13 ⋅12400925557.

It is a cyclic number.

It is not a de Polignac number, because 142230212161 - 2³ = 142230212153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142230212171) 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, 160530271 + ... + 160531156.

It is an arithmetic number, because the mean of its divisors is an integer number (35637818508).

Almost surely, 2^142230212161 is an apocalyptic number.

It is an amenable number.

142230212161 is a deficient number, since it is larger than the sum of its proper divisors (321061871).

142230212161 is an equidigital number, since it uses as much as digits as its factorization.

142230212161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321061870.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 142230212161 in words is "one hundred forty-two billion, two hundred thirty million, two hundred twelve thousand, one hundred sixty-one".