142252591 has 8 divisors (see below), whose sum is σ = 155482544. Its totient is φ = 129349440.

The previous prime is 142252589. The next prime is 142252609. The reversal of 142252591 is 195252241.

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 142252591 - 2¹ = 142252589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142252571) 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, 80790 + ... + 82531.

It is an arithmetic number, because the mean of its divisors is an integer number (19435318).

Almost surely, 2^142252591 is an apocalyptic number.

142252591 is a deficient number, since it is larger than the sum of its proper divisors (13229953).

142252591 is a wasteful number, since it uses less digits than its factorization.

142252591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163401.

The product of its digits is 7200, while the sum is 31.

The square root of 142252591 is about 11926.9690617524. The cubic root of 142252591 is about 522.0195025572.

The spelling of 142252591 in words is "one hundred forty-two million, two hundred fifty-two thousand, five hundred ninety-one".