30420529 has 2 divisors, whose sum is σ = 30420530. Its totient is φ = 30420528.

The previous prime is 30420521. The next prime is 30420547. The reversal of 30420529 is 92502403.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29322225 + 1098304 = 5415^2 + 1048^2 .

It is a cyclic number.

It is not a de Polignac number, because 30420529 - 2³ = 30420521 is a prime.

It is not a weakly prime, because it can be changed into another prime (30420521) 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, 15210264 + 15210265.

It is an arithmetic number, because the mean of its divisors is an integer number (15210265).

Almost surely, 2^30420529 is an apocalyptic number.

It is an amenable number.

30420529 is a deficient number, since it is larger than the sum of its proper divisors (1).

30420529 is an equidigital number, since it uses as much as digits as its factorization.

30420529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 30420529 is about 5515.4808493911. The cubic root of 30420529 is about 312.1683872166.

The spelling of 30420529 in words is "thirty million, four hundred twenty thousand, five hundred twenty-nine".