142975755 has 24 divisors (see below), whose sum is σ = 266889168. Its totient is φ = 70387776.

The previous prime is 142975747. The next prime is 142975757. The reversal of 142975755 is 557579241.

It is not a de Polignac number, because 142975755 - 2³ = 142975747 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 142975755.

It is not an unprimeable number, because it can be changed into a prime (142975757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 121617 + ... + 122786.

It is an arithmetic number, because the mean of its divisors is an integer number (11120382).

Almost surely, 2^142975755 is an apocalyptic number.

142975755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142975755 is a deficient number, since it is larger than the sum of its proper divisors (123913413).

142975755 is a wasteful number, since it uses less digits than its factorization.

142975755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244427 (or 244424 counting only the distinct ones).

The product of its digits is 441000, while the sum is 45.

The square root of 142975755 is about 11957.2469657526. The cubic root of 142975755 is about 522.9025979153.

The spelling of 142975755 in words is "one hundred forty-two million, nine hundred seventy-five thousand, seven hundred fifty-five".