42433249 has 2 divisors, whose sum is σ = 42433250. Its totient is φ = 42433248.

The previous prime is 42433201. The next prime is 42433253. The reversal of 42433249 is 94233424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38044224 + 4389025 = 6168^2 + 2095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42433249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42433249.

It is not a weakly prime, because it can be changed into another prime (42433049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21216624 + 21216625.

It is an arithmetic number, because the mean of its divisors is an integer number (21216625).

Almost surely, 2^42433249 is an apocalyptic number.

It is an amenable number.

42433249 is a deficient number, since it is larger than the sum of its proper divisors (1).

42433249 is an equidigital number, since it uses as much as digits as its factorization.

42433249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 31.

The square root of 42433249 is about 6514.0808254120. The cubic root of 42433249 is about 348.7938043580.

The spelling of 42433249 in words is "forty-two million, four hundred thirty-three thousand, two hundred forty-nine".