30142393 has 2 divisors, whose sum is σ = 30142394. Its totient is φ = 30142392.

The previous prime is 30142381. The next prime is 30142403. The reversal of 30142393 is 39324103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26347689 + 3794704 = 5133^2 + 1948^2 .

It is a cyclic number.

It is not a de Polignac number, because 30142393 - 2⁵ = 30142361 is a prime.

It is not a weakly prime, because it can be changed into another prime (30142313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071196 + 15071197.

It is an arithmetic number, because the mean of its divisors is an integer number (15071197).

Almost surely, 2^30142393 is an apocalyptic number.

It is an amenable number.

30142393 is a deficient number, since it is larger than the sum of its proper divisors (1).

30142393 is an equidigital number, since it uses as much as digits as its factorization.

30142393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30142393 is about 5490.2088302723. The cubic root of 30142393 is about 311.2140839080.

Adding to 30142393 its reverse (39324103), we get a palindrome (69466496).

The spelling of 30142393 in words is "thirty million, one hundred forty-two thousand, three hundred ninety-three".