42949199 has 2 divisors, whose sum is σ = 42949200. Its totient is φ = 42949198.

The previous prime is 42949189. The next prime is 42949223. The reversal of 42949199 is 99194924.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42949199 - 2⁴ = 42949183 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42949129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21474599 + 21474600.

It is an arithmetic number, because the mean of its divisors is an integer number (21474600).

Almost surely, 2^42949199 is an apocalyptic number.

42949199 is a deficient number, since it is larger than the sum of its proper divisors (1).

42949199 is an equidigital number, since it uses as much as digits as its factorization.

42949199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 42949199 is about 6553.5638396219. The cubic root of 42949199 is about 350.2017856829.

The spelling of 42949199 in words is "forty-two million, nine hundred forty-nine thousand, one hundred ninety-nine".