42094649 has 2 divisors, whose sum is σ = 42094650. Its totient is φ = 42094648.

The previous prime is 42094609. The next prime is 42094673. The reversal of 42094649 is 94649024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22024249 + 20070400 = 4693^2 + 4480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42094649 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (42094609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21047324 + 21047325.

It is an arithmetic number, because the mean of its divisors is an integer number (21047325).

Almost surely, 2^42094649 is an apocalyptic number.

It is an amenable number.

42094649 is a deficient number, since it is larger than the sum of its proper divisors (1).

42094649 is an equidigital number, since it uses as much as digits as its factorization.

42094649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 42094649 is about 6488.0389178857. The cubic root of 42094649 is about 347.8635816426.

The spelling of 42094649 in words is "forty-two million, ninety-four thousand, six hundred forty-nine".