142091997808 has 20 divisors (see below), whose sum is σ = 277126450768. Its totient is φ = 70575494400.

The previous prime is 142091997799. The next prime is 142091997811. The reversal of 142091997808 is 808799190241.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 29404041 + ... + 29408872.

Almost surely, 2^142091997808 is an apocalyptic number.

It is an amenable number.

142091997808 is a deficient number, since it is larger than the sum of its proper divisors (135034452960).

142091997808 is a wasteful number, since it uses less digits than its factorization.

142091997808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58813072 (or 58813066 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 58.

The spelling of 142091997808 in words is "one hundred forty-two billion, ninety-one million, nine hundred ninety-seven thousand, eight hundred eight".