142305320 has 64 divisors (see below), whose sum is σ = 336355200. Its totient is φ = 54109440.

The previous prime is 142305313. The next prime is 142305337. The reversal of 142305320 is 23503241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 142305292 and 142305301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76805 + ... + 78635.

It is an arithmetic number, because the mean of its divisors is an integer number (5255550).

Almost surely, 2^142305320 is an apocalyptic number.

142305320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142305320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168177600).

142305320 is an abundant number, since it is smaller than the sum of its proper divisors (194049880).

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

142305320 is a wasteful number, since it uses less digits than its factorization.

142305320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1938 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 142305320 is about 11929.1793514894. The cubic root of 142305320 is about 522.0839938630.

Adding to 142305320 its reverse (23503241), we get a palindrome (165808561).

The spelling of 142305320 in words is "one hundred forty-two million, three hundred five thousand, three hundred twenty".