42394459 has 2 divisors, whose sum is σ = 42394460. Its totient is φ = 42394458.

The previous prime is 42394421. The next prime is 42394477. The reversal of 42394459 is 95449324.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42394459 - 2¹¹ = 42392411 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42392459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21197229 + 21197230.

It is an arithmetic number, because the mean of its divisors is an integer number (21197230).

Almost surely, 2^42394459 is an apocalyptic number.

42394459 is a deficient number, since it is larger than the sum of its proper divisors (1).

42394459 is an equidigital number, since it uses as much as digits as its factorization.

42394459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 40.

The square root of 42394459 is about 6511.1027483829. The cubic root of 42394459 is about 348.6874896420.

The spelling of 42394459 in words is "forty-two million, three hundred ninety-four thousand, four hundred fifty-nine".