142402005 has 24 divisors (see below), whose sum is σ = 247160160. Its totient is φ = 75846240.

The previous prime is 142401997. The next prime is 142402019. The reversal of 142402005 is 500204241.

It is not a de Polignac number, because 142402005 - 2³ = 142401997 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42066 + ... + 45324.

It is an arithmetic number, because the mean of its divisors is an integer number (10298340).

Almost surely, 2^142402005 is an apocalyptic number.

142402005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142402005 is a deficient number, since it is larger than the sum of its proper divisors (104758155).

142402005 is a wasteful number, since it uses less digits than its factorization.

142402005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4241 (or 4238 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 142402005 is about 11933.2311215362. The cubic root of 142402005 is about 522.2022050993.

Adding to 142402005 its reverse (500204241), we get a palindrome (642606246).

The spelling of 142402005 in words is "one hundred forty-two million, four hundred two thousand, five".