142320320 has 112 divisors (see below), whose sum is σ = 360566208. Its totient is φ = 53391360.

The previous prime is 142320301. The next prime is 142320337. The reversal of 142320320 is 23023241.

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, 448802 + ... + 449118.

Almost surely, 2^142320320 is an apocalyptic number.

142320320 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 142320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180283104).

142320320 is an abundant number, since it is smaller than the sum of its proper divisors (218245888).

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

142320320 is a wasteful number, since it uses less digits than its factorization.

142320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 408 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 142320320 is about 11929.8080453962. The cubic root of 142320320 is about 522.1023370160.

Adding to 142320320 its reverse (23023241), we get a palindrome (165343561).

The spelling of 142320320 in words is "one hundred forty-two million, three hundred twenty thousand, three hundred twenty".