142105405402 has 16 divisors (see below), whose sum is σ = 213848712000. Its totient is φ = 70822812960.

The previous prime is 142105405373. The next prime is 142105405417. The reversal of 142105405402 is 204504501241.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843877 + ... + 998167.

It is an arithmetic number, because the mean of its divisors is an integer number (13365544500).

Almost surely, 2^142105405402 is an apocalyptic number.

142105405402 is a deficient number, since it is larger than the sum of its proper divisors (71743306598).

142105405402 is a wasteful number, since it uses less digits than its factorization.

142105405402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155781.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 142105405402 its reverse (204504501241), we get a palindrome (346609906643).

The spelling of 142105405402 in words is "one hundred forty-two billion, one hundred five million, four hundred five thousand, four hundred two".