142920290305 has 16 divisors (see below), whose sum is σ = 185101179984. Its totient is φ = 105310172160.

The previous prime is 142920290273. The next prime is 142920290363. The reversal of 142920290305 is 503092029241.

It is a Cunningham number, because it is equal to 378048²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 9952855696 + 132967434609 = 99764^2 + 364647^2 .

It is not a de Polignac number, because 142920290305 - 2⁵ = 142920290273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2375956 + ... + 2435365.

It is an arithmetic number, because the mean of its divisors is an integer number (11568823749).

Almost surely, 2^142920290305 is an apocalyptic number.

It is an amenable number.

142920290305 is a deficient number, since it is larger than the sum of its proper divisors (42180889679).

142920290305 is a wasteful number, since it uses less digits than its factorization.

142920290305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811796.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 142920290305 in words is "one hundred forty-two billion, nine hundred twenty million, two hundred ninety thousand, three hundred five".