142311424 has 64 divisors (see below), whose sum is σ = 294121080. Its totient is φ = 68812800.

The previous prime is 142311401. The next prime is 142311427. The reversal of 142311424 is 424113241.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 142311395 and 142311404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142311427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1408974 + ... + 1409074.

Almost surely, 2^142311424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142311424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147060540).

142311424 is an abundant number, since it is smaller than the sum of its proper divisors (151809656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142311424 is an frugal number, since it uses more digits than its factorization.

142311424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 146 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 142311424 is about 11929.4351919946. The cubic root of 142311424 is about 522.0914584590.

Adding to 142311424 its reverse (424113241), we get a palindrome (566424665).

The spelling of 142311424 in words is "one hundred forty-two million, three hundred eleven thousand, four hundred twenty-four".