142323220 has 24 divisors (see below), whose sum is σ = 321870024. Its totient is φ = 52550016.

The previous prime is 142323199. The next prime is 142323227. The reversal of 142323220 is 22323241.

142323220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11861136 + 130462084 = 3444^2 + 11422^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142323227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273439 + ... + 273958.

It is an arithmetic number, because the mean of its divisors is an integer number (13411251).

Almost surely, 2^142323220 is an apocalyptic number.

142323220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142323220 is an abundant number, since it is smaller than the sum of its proper divisors (179546804).

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

142323220 is a wasteful number, since it uses less digits than its factorization.

142323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547419 (or 547417 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 142323220 is about 11929.9295890630. The cubic root of 142323220 is about 522.1058832103.

Adding to 142323220 its reverse (22323241), we get a palindrome (164646461).

The spelling of 142323220 in words is "one hundred forty-two million, three hundred twenty-three thousand, two hundred twenty".