998194042 has 4 divisors (see below), whose sum is σ = 1497291066. Its totient is φ = 499097020.

The previous prime is 998194027. The next prime is 998194069. The reversal of 998194042 is 240491899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 606193641 + 392000401 = 24621^2 + 19799^2 .

It is a junction number, because it is equal to n+sod(n) for n = 998193983 and 998194001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249548509 + ... + 249548512.

Almost surely, 2^998194042 is an apocalyptic number.

998194042 is a deficient number, since it is larger than the sum of its proper divisors (499097024).

998194042 is a wasteful number, since it uses less digits than its factorization.

998194042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499097023.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 998194042 is about 31594.2089946876. The cubic root of 998194042 is about 999.3976512488.

The spelling of 998194042 in words is "nine hundred ninety-eight million, one hundred ninety-four thousand, forty-two".