30442273 has 2 divisors, whose sum is σ = 30442274. Its totient is φ = 30442272.

The previous prime is 30442267. The next prime is 30442297. The reversal of 30442273 is 37224403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22014864 + 8427409 = 4692^2 + 2903^2 .

It is a cyclic number.

It is not a de Polignac number, because 30442273 - 2¹³ = 30434081 is a prime.

It is not a weakly prime, because it can be changed into another prime (30442873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15221136 + 15221137.

It is an arithmetic number, because the mean of its divisors is an integer number (15221137).

Almost surely, 2^30442273 is an apocalyptic number.

It is an amenable number.

30442273 is a deficient number, since it is larger than the sum of its proper divisors (1).

30442273 is an equidigital number, since it uses as much as digits as its factorization.

30442273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 30442273 is about 5517.4516762723. The cubic root of 30442273 is about 312.2427467913.

Adding to 30442273 its reverse (37224403), we get a palindrome (67666676).

The spelling of 30442273 in words is "thirty million, four hundred forty-two thousand, two hundred seventy-three".