142323720 has 256 divisors, whose sum is σ = 542177280. Its totient is φ = 29030400.

The previous prime is 142323703. The next prime is 142323721. The reversal of 142323720 is 27323241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (142323721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 674415 + ... + 674625.

It is an arithmetic number, because the mean of its divisors is an integer number (2117880).

Almost surely, 2^142323720 is an apocalyptic number.

142323720 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 142323720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271088640).

142323720 is an abundant number, since it is smaller than the sum of its proper divisors (399853560).

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

142323720 is a wasteful number, since it uses less digits than its factorization.

142323720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 312 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 142323720 is about 11929.9505447424. The cubic root of 142323720 is about 522.1064946182.

Adding to 142323720 its reverse (27323241), we get a palindrome (169646961).

The spelling of 142323720 in words is "one hundred forty-two million, three hundred twenty-three thousand, seven hundred twenty".