42819433 has 2 divisors, whose sum is σ = 42819434. Its totient is φ = 42819432.

The previous prime is 42819383. The next prime is 42819509. The reversal of 42819433 is 33491824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26594649 + 16224784 = 5157^2 + 4028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42819433 is a prime.

It is not a weakly prime, because it can be changed into another prime (42819533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21409716 + 21409717.

It is an arithmetic number, because the mean of its divisors is an integer number (21409717).

Almost surely, 2^42819433 is an apocalyptic number.

It is an amenable number.

42819433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42819433 is an equidigital number, since it uses as much as digits as its factorization.

42819433 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 42819433 is about 6543.6559353316. The cubic root of 42819433 is about 349.8487319111.

The spelling of 42819433 in words is "forty-two million, eight hundred nineteen thousand, four hundred thirty-three".