142408439 has 8 divisors (see below), whose sum is σ = 158721840. Its totient is φ = 126976896.

The previous prime is 142408423. The next prime is 142408471. The reversal of 142408439 is 934804241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142408439 - 2⁴ = 142408423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142408399 and 142408408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142408339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220124 + ... + 220769.

It is an arithmetic number, because the mean of its divisors is an integer number (19840230).

Almost surely, 2^142408439 is an apocalyptic number.

142408439 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

142408439 is a deficient number, since it is larger than the sum of its proper divisors (16313401).

142408439 is a wasteful number, since it uses less digits than its factorization.

142408439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440929.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 142408439 is about 11933.5007018058. The cubic root of 142408439 is about 522.2100696852.

The spelling of 142408439 in words is "one hundred forty-two million, four hundred eight thousand, four hundred thirty-nine".