142594381 has 8 divisors (see below), whose sum is σ = 145931904. Its totient is φ = 139269600.

The previous prime is 142594379. The next prime is 142594391. The reversal of 142594381 is 183495241.

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 142594381 - 2¹ = 142594379 is a prime.

It is a super-2 number, since 2×142594381² = 40666314985546322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142594381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142594391) 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, 21681 + ... + 27481.

It is an arithmetic number, because the mean of its divisors is an integer number (18241488).

Almost surely, 2^142594381 is an apocalyptic number.

It is an amenable number.

142594381 is a deficient number, since it is larger than the sum of its proper divisors (3337523).

142594381 is an equidigital number, since it uses as much as digits as its factorization.

142594381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6371.

The product of its digits is 34560, while the sum is 37.

The square root of 142594381 is about 11941.2889170307. The cubic root of 142594381 is about 522.4372532115.

The spelling of 142594381 in words is "one hundred forty-two million, five hundred ninety-four thousand, three hundred eighty-one".