42198766 has 4 divisors (see below), whose sum is σ = 63298152. Its totient is φ = 21099382.

The previous prime is 42198757. The next prime is 42198769. The reversal of 42198766 is 66789124.

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 (42198769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10549690 + ... + 10549693.

It is an arithmetic number, because the mean of its divisors is an integer number (15824538).

Almost surely, 2^42198766 is an apocalyptic number.

42198766 is a deficient number, since it is larger than the sum of its proper divisors (21099386).

42198766 is a wasteful number, since it uses less digits than its factorization.

42198766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21099385.

The product of its digits is 145152, while the sum is 43.

The square root of 42198766 is about 6496.0577275760. The cubic root of 42198766 is about 348.1501476977.

The spelling of 42198766 in words is "forty-two million, one hundred ninety-eight thousand, seven hundred sixty-six".