142175121 has 24 divisors (see below), whose sum is σ = 217439040. Its totient is φ = 82415520.

The previous prime is 142175113. The next prime is 142175147. The reversal of 142175121 is 121571241.

142175121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142175121 - 2³ = 142175113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142175091 and 142175100.

It is not an unprimeable number, because it can be changed into a prime (142175101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166 + ... + 16863.

It is an arithmetic number, because the mean of its divisors is an integer number (9059960).

Almost surely, 2^142175121 is an apocalyptic number.

142175121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142175121 is a deficient number, since it is larger than the sum of its proper divisors (75263919).

142175121 is a wasteful number, since it uses less digits than its factorization.

142175121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17077 (or 17066 counting only the distinct ones).

The product of its digits is 560, while the sum is 24.

The square root of 142175121 is about 11923.7209376939. The cubic root of 142175121 is about 521.9247223401.

The spelling of 142175121 in words is "one hundred forty-two million, one hundred seventy-five thousand, one hundred twenty-one".