142022320 has 80 divisors (see below), whose sum is σ = 362476800. Its totient is φ = 51321600.

The previous prime is 142022299. The next prime is 142022333. The reversal of 142022320 is 23220241.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 142022294 and 142022303.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174715 + ... + 175525.

It is an arithmetic number, because the mean of its divisors is an integer number (4530960).

Almost surely, 2^142022320 is an apocalyptic number.

142022320 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 142022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181238400).

142022320 is an abundant number, since it is smaller than the sum of its proper divisors (220454480).

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

142022320 is a wasteful number, since it uses less digits than its factorization.

142022320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 142022320 is about 11917.3117774102. The cubic root of 142022320 is about 521.7376778784.

Adding to 142022320 its reverse (23220241), we get a palindrome (165242561).

The spelling of 142022320 in words is "one hundred forty-two million, twenty-two thousand, three hundred twenty".