142824381 has 16 divisors (see below), whose sum is σ = 220704768. Its totient is φ = 80463600.

The previous prime is 142824379. The next prime is 142824389. The reversal of 142824381 is 183428241.

142824381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142824381 - 2¹ = 142824379 is a prime.

It is a super-4 number, since 4×142824381⁴ (a number of 34 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142824389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46405 + ... + 49386.

It is an arithmetic number, because the mean of its divisors is an integer number (13794048).

Almost surely, 2^142824381 is an apocalyptic number.

It is an amenable number.

142824381 is a deficient number, since it is larger than the sum of its proper divisors (77880387).

142824381 is an equidigital number, since it uses as much as digits as its factorization.

142824381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95872.

The product of its digits is 12288, while the sum is 33.

The square root of 142824381 is about 11950.9154879448. The cubic root of 142824381 is about 522.7179936358.

The spelling of 142824381 in words is "one hundred forty-two million, eight hundred twenty-four thousand, three hundred eighty-one".