142140305506 has 8 divisors (see below), whose sum is σ = 213409909980. Its totient is φ = 71003668848.

The previous prime is 142140305477. The next prime is 142140305519. The reversal of 142140305506 is 605503041241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 141071604025 + 1068701481 = 375595^2 + 32691^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33239281 + ... + 33243556.

Almost surely, 2^142140305506 is an apocalyptic number.

142140305506 is a deficient number, since it is larger than the sum of its proper divisors (71269604474).

142140305506 is a wasteful number, since it uses less digits than its factorization.

142140305506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66483908.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 142140305506 its reverse (605503041241), we get a palindrome (747643346747).

The spelling of 142140305506 in words is "one hundred forty-two billion, one hundred forty million, three hundred five thousand, five hundred six".