42813998 has 4 divisors (see below), whose sum is σ = 64221000. Its totient is φ = 21406998.

The previous prime is 42813997. The next prime is 42814027. The reversal of 42813998 is 89931824.

It is a happy number.

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 (42813997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10703498 + ... + 10703501.

It is an arithmetic number, because the mean of its divisors is an integer number (16055250).

Almost surely, 2^42813998 is an apocalyptic number.

42813998 is a deficient number, since it is larger than the sum of its proper divisors (21407002).

42813998 is a wasteful number, since it uses less digits than its factorization.

42813998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21407001.

The product of its digits is 124416, while the sum is 44.

The square root of 42813998 is about 6543.2406344257. The cubic root of 42813998 is about 349.8339293773.

The spelling of 42813998 in words is "forty-two million, eight hundred thirteen thousand, nine hundred ninety-eight".