199426043 has 2 divisors, whose sum is σ = 199426044. Its totient is φ = 199426042.

The previous prime is 199426039. The next prime is 199426061. The reversal of 199426043 is 340624991.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 199426043 - 2² = 199426039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 199425988 and 199426006.

It is not a weakly prime, because it can be changed into another prime (199426063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99713021 + 99713022.

It is an arithmetic number, because the mean of its divisors is an integer number (99713022).

Almost surely, 2^199426043 is an apocalyptic number.

199426043 is a deficient number, since it is larger than the sum of its proper divisors (1).

199426043 is an equidigital number, since it uses as much as digits as its factorization.

199426043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 199426043 is about 14121.8285997246. The cubic root of 199426043 is about 584.2435914996.

The spelling of 199426043 in words is "one hundred ninety-nine million, four hundred twenty-six thousand, forty-three".