42199841 has 2 divisors, whose sum is σ = 42199842. Its totient is φ = 42199840.

The previous prime is 42199811. The next prime is 42199853. The reversal of 42199841 is 14899124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39627025 + 2572816 = 6295^2 + 1604^2 .

It is a cyclic number.

It is not a de Polignac number, because 42199841 - 2¹⁰ = 42198817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42199795 and 42199804.

It is not a weakly prime, because it can be changed into another prime (42199811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21099920 + 21099921.

It is an arithmetic number, because the mean of its divisors is an integer number (21099921).

Almost surely, 2^42199841 is an apocalyptic number.

It is an amenable number.

42199841 is a deficient number, since it is larger than the sum of its proper divisors (1).

42199841 is an equidigital number, since it uses as much as digits as its factorization.

42199841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 42199841 is about 6496.1404695404. The cubic root of 42199841 is about 348.1531040103.

The spelling of 42199841 in words is "forty-two million, one hundred ninety-nine thousand, eight hundred forty-one".