142871593 has 8 divisors (see below), whose sum is σ = 146542536. Its totient is φ = 139209600.

The previous prime is 142871581. The next prime is 142871647. The reversal of 142871593 is 395178241.

It can be written as a sum of positive squares in 4 ways, for example, as 24235929 + 118635664 = 4923^2 + 10892^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142871593 - 2²⁵ = 109317161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142871503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40155 + ... + 43567.

It is an arithmetic number, because the mean of its divisors is an integer number (18317817).

Almost surely, 2^142871593 is an apocalyptic number.

It is an amenable number.

142871593 is a deficient number, since it is larger than the sum of its proper divisors (3670943).

142871593 is a wasteful number, since it uses less digits than its factorization.

142871593 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4475.

The product of its digits is 60480, while the sum is 40.

The square root of 142871593 is about 11952.8905709038. The cubic root of 142871593 is about 522.7755838105.

The spelling of 142871593 in words is "one hundred forty-two million, eight hundred seventy-one thousand, five hundred ninety-three".