42099199 has 4 divisors (see below), whose sum is σ = 42259536. Its totient is φ = 41938864.

The previous prime is 42099163. The next prime is 42099203. The reversal of 42099199 is 99199024.

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

It is a cyclic number.

It is not a de Polignac number, because 42099199 - 2⁹ = 42098687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42099149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79774 + ... + 80299.

It is an arithmetic number, because the mean of its divisors is an integer number (10564884).

Almost surely, 2^42099199 is an apocalyptic number.

42099199 is a deficient number, since it is larger than the sum of its proper divisors (160337).

42099199 is a wasteful number, since it uses less digits than its factorization.

42099199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160336.

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 42099199 is about 6488.3895536566. The cubic root of 42099199 is about 347.8761146867.

The spelling of 42099199 in words is "forty-two million, ninety-nine thousand, one hundred ninety-nine".