742666198 has 4 divisors (see below), whose sum is σ = 1113999300. Its totient is φ = 371333098.

The previous prime is 742666193. The next prime is 742666219. The reversal of 742666198 is 891666247.

742666198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742666193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185666548 + ... + 185666551.

It is an arithmetic number, because the mean of its divisors is an integer number (278499825).

Almost surely, 2^742666198 is an apocalyptic number.

742666198 is a deficient number, since it is larger than the sum of its proper divisors (371333102).

742666198 is a wasteful number, since it uses less digits than its factorization.

742666198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371333101.

The product of its digits is 870912, while the sum is 49.

The square root of 742666198 is about 27251.9026491730. The cubic root of 742666198 is about 905.5891681642.

Adding to 742666198 its sum of digits (49), we get a palindrome (742666247).

The spelling of 742666198 in words is "seven hundred forty-two million, six hundred sixty-six thousand, one hundred ninety-eight".