42336289 has 2 divisors, whose sum is σ = 42336290. Its totient is φ = 42336288.

The previous prime is 42336269. The next prime is 42336293. The reversal of 42336289 is 98263324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39125025 + 3211264 = 6255^2 + 1792^2 .

It is a cyclic number.

It is not a de Polignac number, because 42336289 - 2¹¹ = 42334241 is a prime.

It is a super-2 number, since 2×42336289² = 3584722732583042, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42336269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21168144 + 21168145.

It is an arithmetic number, because the mean of its divisors is an integer number (21168145).

Almost surely, 2^42336289 is an apocalyptic number.

It is an amenable number.

42336289 is a deficient number, since it is larger than the sum of its proper divisors (1).

42336289 is an equidigital number, since it uses as much as digits as its factorization.

42336289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 37.

The square root of 42336289 is about 6506.6342297689. The cubic root of 42336289 is about 348.5279370671.

The spelling of 42336289 in words is "forty-two million, three hundred thirty-six thousand, two hundred eighty-nine".