42199637 has 4 divisors (see below), whose sum is σ = 42239340. Its totient is φ = 42159936.

The previous prime is 42199613. The next prime is 42199639. The reversal of 42199637 is 73699124.

42199637 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 can be written as a sum of positive squares in 2 ways, for example, as 30096196 + 12103441 = 5486^2 + 3479^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42199637 is a prime.

It is a Duffinian number.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 42199594 and 42199603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42199639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18212 + ... + 20397.

It is an arithmetic number, because the mean of its divisors is an integer number (10559835).

Almost surely, 2^42199637 is an apocalyptic number.

It is an amenable number.

42199637 is a deficient number, since it is larger than the sum of its proper divisors (39703).

42199637 is a wasteful number, since it uses less digits than its factorization.

42199637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39702.

The product of its digits is 81648, while the sum is 41.

The square root of 42199637 is about 6496.1247678905. The cubic root of 42199637 is about 348.1525430022.

The spelling of 42199637 in words is "forty-two million, one hundred ninety-nine thousand, six hundred thirty-seven".