30142039 has 2 divisors, whose sum is σ = 30142040. Its totient is φ = 30142038.

The previous prime is 30142009. The next prime is 30142043. The reversal of 30142039 is 93024103.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30142039 - 2¹³ = 30133847 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30142009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15071019 + 15071020.

It is an arithmetic number, because the mean of its divisors is an integer number (15071020).

Almost surely, 2^30142039 is an apocalyptic number.

30142039 is a deficient number, since it is larger than the sum of its proper divisors (1).

30142039 is an equidigital number, since it uses as much as digits as its factorization.

30142039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 30142039 is about 5490.1765909668. The cubic root of 30142039 is about 311.2128655772.

The spelling of 30142039 in words is "thirty million, one hundred forty-two thousand, thirty-nine".