42403033 has 2 divisors, whose sum is σ = 42403034. Its totient is φ = 42403032.

The previous prime is 42403019. The next prime is 42403037. The reversal of 42403033 is 33030424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32867289 + 9535744 = 5733^2 + 3088^2 .

It is a cyclic number.

It is not a de Polignac number, because 42403033 - 2¹³ = 42394841 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42403033.

It is not a weakly prime, because it can be changed into another prime (42403037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201516 + 21201517.

It is an arithmetic number, because the mean of its divisors is an integer number (21201517).

Almost surely, 2^42403033 is an apocalyptic number.

It is an amenable number.

42403033 is a deficient number, since it is larger than the sum of its proper divisors (1).

42403033 is an equidigital number, since it uses as much as digits as its factorization.

42403033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 42403033 is about 6511.7611289113. The cubic root of 42403033 is about 348.7109946399.

Adding to 42403033 its reverse (33030424), we get a palindrome (75433457).

The spelling of 42403033 in words is "forty-two million, four hundred three thousand, thirty-three".