142594921 has 8 divisors (see below), whose sum is σ = 165029120. Its totient is φ = 120676608.

The previous prime is 142594883. The next prime is 142594939. The reversal of 142594921 is 129495241.

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

It is not a de Polignac number, because 142594921 - 2¹¹ = 142592873 is a prime.

It is a super-2 number, since 2×142594921² = 40666622989992482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142594021) 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 7 ways as a sum of consecutive naturals, for example, 128376 + ... + 129481.

It is an arithmetic number, because the mean of its divisors is an integer number (20628640).

Almost surely, 2^142594921 is an apocalyptic number.

It is an amenable number.

142594921 is a deficient number, since it is larger than the sum of its proper divisors (22434199).

142594921 is an equidigital number, since it uses as much as digits as its factorization.

142594921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257943.

The product of its digits is 25920, while the sum is 37.

The square root of 142594921 is about 11941.3115276338. The cubic root of 142594921 is about 522.4379126947.

The spelling of 142594921 in words is "one hundred forty-two million, five hundred ninety-four thousand, nine hundred twenty-one".