142884009 has 24 divisors (see below), whose sum is σ = 218181600. Its totient is φ = 89856000.

The previous prime is 142883977. The next prime is 142884011. The reversal of 142884009 is 900488241.

It is not a de Polignac number, because 142884009 - 2⁵ = 142883977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142884019) 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, 41257 + ... + 44585.

It is an arithmetic number, because the mean of its divisors is an integer number (9090900).

Almost surely, 2^142884009 is an apocalyptic number.

142884009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

142884009 is a deficient number, since it is larger than the sum of its proper divisors (75297591).

142884009 is a wasteful number, since it uses less digits than its factorization.

142884009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605 (or 3602 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 142884009 is about 11953.4099318981. The cubic root of 142884009 is about 522.7907269973.

It can be divided in two parts, 14288400 and 9, that multiplied together give a square (128595600 = 11340²).

The spelling of 142884009 in words is "one hundred forty-two million, eight hundred eighty-four thousand, nine".