42094387 has 2 divisors, whose sum is σ = 42094388. Its totient is φ = 42094386.

The previous prime is 42094309. The next prime is 42094391. The reversal of 42094387 is 78349024.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42094387 - 2¹¹ = 42092339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42094487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21047193 + 21047194.

It is an arithmetic number, because the mean of its divisors is an integer number (21047194).

Almost surely, 2^42094387 is an apocalyptic number.

42094387 is a deficient number, since it is larger than the sum of its proper divisors (1).

42094387 is an equidigital number, since it uses as much as digits as its factorization.

42094387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 42094387 is about 6488.0187268534. The cubic root of 42094387 is about 347.8628599321.

The spelling of 42094387 in words is "forty-two million, ninety-four thousand, three hundred eighty-seven".