142928775 has 144 divisors (see below), whose sum is σ = 306408960. Its totient is φ = 62899200.

The previous prime is 142928771. The next prime is 142928783. The reversal of 142928775 is 577829241.

It is a happy number.

It is not a de Polignac number, because 142928775 - 2² = 142928771 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 142928775.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142928771) by changing a digit.

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 143 ways as a sum of consecutive naturals, for example, 1809186 + ... + 1809264.

It is an arithmetic number, because the mean of its divisors is an integer number (2127840).

Almost surely, 2^142928775 is an apocalyptic number.

142928775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142928775 is an abundant number, since it is smaller than the sum of its proper divisors (163480185).

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

142928775 is a wasteful number, since it uses less digits than its factorization.

142928775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166 (or 158 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 142928775 is about 11955.2823053243. The cubic root of 142928775 is about 522.8453186113.

The spelling of 142928775 in words is "one hundred forty-two million, nine hundred twenty-eight thousand, seven hundred seventy-five".