30042973 has 2 divisors, whose sum is σ = 30042974. Its totient is φ = 30042972.

The previous prime is 30042953. The next prime is 30042979. The reversal of 30042973 is 37924003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24176889 + 5866084 = 4917^2 + 2422^2 .

It is a cyclic number.

It is not a de Polignac number, because 30042973 - 2⁹ = 30042461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30042979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15021486 + 15021487.

It is an arithmetic number, because the mean of its divisors is an integer number (15021487).

Almost surely, 2^30042973 is an apocalyptic number.

It is an amenable number.

30042973 is a deficient number, since it is larger than the sum of its proper divisors (1).

30042973 is an equidigital number, since it uses as much as digits as its factorization.

30042973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 30042973 is about 5481.1470514848. The cubic root of 30042973 is about 310.8715432587.

Adding to 30042973 its reverse (37924003), we get a palindrome (67966976).

The spelling of 30042973 in words is "thirty million, forty-two thousand, nine hundred seventy-three".