142523220 has 48 divisors (see below), whose sum is σ = 456075648. Its totient is φ = 32576640.

The previous prime is 142523207. The next prime is 142523243. The reversal of 142523220 is 22325241.

142523220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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, 169251 + ... + 170090.

It is an arithmetic number, because the mean of its divisors is an integer number (9501576).

Almost surely, 2^142523220 is an apocalyptic number.

142523220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142523220 is an abundant number, since it is smaller than the sum of its proper divisors (313552428).

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

142523220 is a wasteful number, since it uses less digits than its factorization.

142523220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339360 (or 339358 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 142523220 is about 11938.3089254718. The cubic root of 142523220 is about 522.3503322001.

Adding to 142523220 its reverse (22325241), we get a palindrome (164848461).

The spelling of 142523220 in words is "one hundred forty-two million, five hundred twenty-three thousand, two hundred twenty".