142232873 has 4 divisors (see below), whose sum is σ = 142550100. Its totient is φ = 141915648.

The previous prime is 142232869. The next prime is 142232887. The reversal of 142232873 is 378232241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 102252544 + 39980329 = 10112^2 + 6323^2 .

It is a cyclic number.

It is not a de Polignac number, because 142232873 - 2² = 142232869 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142232833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157940 + ... + 158837.

It is an arithmetic number, because the mean of its divisors is an integer number (35637525).

Almost surely, 2^142232873 is an apocalyptic number.

It is an amenable number.

142232873 is a deficient number, since it is larger than the sum of its proper divisors (317227).

142232873 is an equidigital number, since it uses as much as digits as its factorization.

142232873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317226.

The product of its digits is 16128, while the sum is 32.

The square root of 142232873 is about 11926.1424190725. The cubic root of 142232873 is about 521.9953819510.

The spelling of 142232873 in words is "one hundred forty-two million, two hundred thirty-two thousand, eight hundred seventy-three".