142394381831 has 24 divisors (see below), whose sum is σ = 161902987344. Its totient is φ = 124477274880.

The previous prime is 142394381821. The next prime is 142394381851. The reversal of 142394381831 is 138183493241.

142394381831 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 142394381831 - 2¹⁴ = 142394365447 is a prime.

It is a super-2 number, since 2×142394381831² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142394381821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22152440 + ... + 22158866.

It is an arithmetic number, because the mean of its divisors is an integer number (6745957806).

Almost surely, 2^142394381831 is an apocalyptic number.

142394381831 is a deficient number, since it is larger than the sum of its proper divisors (19508605513).

142394381831 is a wasteful number, since it uses less digits than its factorization.

142394381831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11199 (or 11180 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The spelling of 142394381831 in words is "one hundred forty-two billion, three hundred ninety-four million, three hundred eighty-one thousand, eight hundred thirty-one".