142142005 has 8 divisors (see below), whose sum is σ = 170678232. Its totient is φ = 113641728.

The previous prime is 142142003. The next prime is 142142029. The reversal of 142142005 is 500241241.

142142005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4384836 + 137757169 = 2094^2 + 11737^2 .

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 142142005 - 2¹ = 142142003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142142003) 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, 657 + ... + 16873.

It is an arithmetic number, because the mean of its divisors is an integer number (21334779).

Almost surely, 2^142142005 is an apocalyptic number.

It is an amenable number.

142142005 is a deficient number, since it is larger than the sum of its proper divisors (28536227).

142142005 is a wasteful number, since it uses less digits than its factorization.

142142005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17975.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 142142005 is about 11922.3321963448. The cubic root of 142142005 is about 521.8841962595.

Adding to 142142005 its reverse (500241241), we get a palindrome (642383246).

The spelling of 142142005 in words is "one hundred forty-two million, one hundred forty-two thousand, five".