992120842 has 4 divisors (see below), whose sum is σ = 1488181266. Its totient is φ = 496060420.

The previous prime is 992120839. The next prime is 992120861. The reversal of 992120842 is 248021299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248021299 = 7853 ⋅31583.

It can be written as a sum of positive squares in only one way, i.e., 904866561 + 87254281 = 30081^2 + 9341^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248030209 + ... + 248030212.

Almost surely, 2^992120842 is an apocalyptic number.

992120842 is a deficient number, since it is larger than the sum of its proper divisors (496060424).

992120842 is a wasteful number, since it uses less digits than its factorization.

992120842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 496060423.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 992120842 is about 31497.9498062969. The cubic root of 992120842 is about 997.3666857428.

The spelling of 992120842 in words is "nine hundred ninety-two million, one hundred twenty thousand, eight hundred forty-two".