142161051 has 4 divisors (see below), whose sum is σ = 189548072. Its totient is φ = 94774032.

The previous prime is 142161043. The next prime is 142161079. The reversal of 142161051 is 150161241.

142161051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 142161051 - 2³ = 142161043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142161011) 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, 23693506 + ... + 23693511.

It is an arithmetic number, because the mean of its divisors is an integer number (47387018).

Almost surely, 2^142161051 is an apocalyptic number.

142161051 is a deficient number, since it is larger than the sum of its proper divisors (47387021).

142161051 is an equidigital number, since it uses as much as digits as its factorization.

142161051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47387020.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 142161051 is about 11923.1309227065. The cubic root of 142161051 is about 521.9075047869.

The spelling of 142161051 in words is "one hundred forty-two million, one hundred sixty-one thousand, fifty-one".