142232571 has 16 divisors (see below), whose sum is σ = 226924320. Its totient is φ = 87527520.

The previous prime is 142232527. The next prime is 142232609. The reversal of 142232571 is 175232241.

It is not a de Polignac number, because 142232571 - 2¹⁴ = 142216187 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142232171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202260 + ... + 202961.

It is an arithmetic number, because the mean of its divisors is an integer number (14182770).

Almost surely, 2^142232571 is an apocalyptic number.

142232571 is a deficient number, since it is larger than the sum of its proper divisors (84691749).

142232571 is a wasteful number, since it uses less digits than its factorization.

142232571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405243 (or 405237 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 142232571 is about 11926.1297578049. The cubic root of 142232571 is about 521.9950125035.

The spelling of 142232571 in words is "one hundred forty-two million, two hundred thirty-two thousand, five hundred seventy-one".