142040305 has 8 divisors (see below), whose sum is σ = 185943744. Its totient is φ = 103302000.

The previous prime is 142040303. The next prime is 142040323. The reversal of 142040305 is 503040241.

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

It is not a de Polignac number, because 142040305 - 2¹ = 142040303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142040303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1291221 + ... + 1291330.

It is an arithmetic number, because the mean of its divisors is an integer number (23242968).

Almost surely, 2^142040305 is an apocalyptic number.

It is an amenable number.

142040305 is a deficient number, since it is larger than the sum of its proper divisors (43903439).

142040305 is a wasteful number, since it uses less digits than its factorization.

142040305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2582567.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 142040305 is about 11918.0663280584. The cubic root of 142040305 is about 521.7597003701.

Adding to 142040305 its reverse (503040241), we get a palindrome (645080546).

The spelling of 142040305 in words is "one hundred forty-two million, forty thousand, three hundred five".