142552224 has 120 divisors (see below), whose sum is σ = 429327360. Its totient is φ = 46376064.

The previous prime is 142552211. The next prime is 142552237. The reversal of 142552224 is 422255241.

It is an interprime number because it is at equal distance from previous prime (142552211) and next prime (142552237).

It is a super-2 number, since 2×142552224² = 40642273134692352, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 110817 + ... + 112095.

It is an arithmetic number, because the mean of its divisors is an integer number (3577728).

Almost surely, 2^142552224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142552224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214663680).

142552224 is an abundant number, since it is smaller than the sum of its proper divisors (286775136).

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

142552224 is a wasteful number, since it uses less digits than its factorization.

142552224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344 (or 1327 counting only the distinct ones).

The product of its digits is 6400, while the sum is 27.

The square root of 142552224 is about 11939.5236085867. The cubic root of 142552224 is about 522.3857632021.

The spelling of 142552224 in words is "one hundred forty-two million, five hundred fifty-two thousand, two hundred twenty-four".