142871873 has 4 divisors (see below), whose sum is σ = 144286548. Its totient is φ = 141457200.

The previous prime is 142871867. The next prime is 142871879. The reversal of 142871873 is 378178241.

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

It is an interprime number because it is at equal distance from previous prime (142871867) and next prime (142871879).

It can be written as a sum of positive squares in 2 ways, for example, as 79780624 + 63091249 = 8932^2 + 7943^2 .

It is a cyclic number.

It is not a de Polignac number, because 142871873 - 2²² = 138677569 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142871873.

It is not an unprimeable number, because it can be changed into a prime (142871879) 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, 707186 + ... + 707387.

It is an arithmetic number, because the mean of its divisors is an integer number (36071637).

Almost surely, 2^142871873 is an apocalyptic number.

It is an amenable number.

142871873 is a deficient number, since it is larger than the sum of its proper divisors (1414675).

142871873 is a wasteful number, since it uses less digits than its factorization.

142871873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1414674.

The product of its digits is 75264, while the sum is 41.

The square root of 142871873 is about 11952.9022835460. The cubic root of 142871873 is about 522.7759253225.

The spelling of 142871873 in words is "one hundred forty-two million, eight hundred seventy-one thousand, eight hundred seventy-three".