798618042 has 40 divisors (see below), whose sum is σ = 1796948736. Its totient is φ = 266192892.

The previous prime is 798617977. The next prime is 798618043. The reversal of 798618042 is 240816897.

It is not an unprimeable number, because it can be changed into a prime (798618043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 29223 + ... + 49509.

Almost surely, 2^798618042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 798618042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (898474368).

798618042 is an abundant number, since it is smaller than the sum of its proper divisors (998330694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

798618042 is an frugal number, since it uses more digits than its factorization.

798618042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20316 (or 20292 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 798618042 is about 28259.8308912138. The cubic root of 798618042 is about 927.7829185617.

The spelling of 798618042 in words is "seven hundred ninety-eight million, six hundred eighteen thousand, forty-two".