142223520 has 48 divisors (see below), whose sum is σ = 448005600. Its totient is φ = 37926144.

The previous prime is 142223507. The next prime is 142223561. The reversal of 142223520 is 25322241.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147670 + ... + 148629.

It is an arithmetic number, because the mean of its divisors is an integer number (9333450).

Almost surely, 2^142223520 is an apocalyptic number.

142223520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142223520 is an abundant number, since it is smaller than the sum of its proper divisors (305782080).

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

142223520 is a wasteful number, since it uses less digits than its factorization.

142223520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296317 (or 296309 counting only the distinct ones).

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

The square root of 142223520 is about 11925.7502908622. The cubic root of 142223520 is about 521.9839398473.

Adding to 142223520 its reverse (25322241), we get a palindrome (167545761).

It can be divided in two parts, 1422 and 23520, that added together give a palindrome (24942).

The spelling of 142223520 in words is "one hundred forty-two million, two hundred twenty-three thousand, five hundred twenty".