142550128 has 40 divisors (see below), whose sum is σ = 319662080. Its totient is φ = 60315840.

The previous prime is 142550119. The next prime is 142550131. The reversal of 142550128 is 821055241.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 142550096 and 142550105.

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 7 ways as a sum of consecutive naturals, for example, 793 + ... + 16903.

It is an arithmetic number, because the mean of its divisors is an integer number (7991552).

Almost surely, 2^142550128 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 142550128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159831040).

142550128 is an abundant number, since it is smaller than the sum of its proper divisors (177111952).

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

142550128 is a wasteful number, since it uses less digits than its factorization.

142550128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16205 (or 16199 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 28.

The square root of 142550128 is about 11939.4358325676. The cubic root of 142550128 is about 522.3832029101.

The spelling of 142550128 in words is "one hundred forty-two million, five hundred fifty thousand, one hundred twenty-eight".