30142403 has 2 divisors, whose sum is σ = 30142404. Its totient is φ = 30142402.

The previous prime is 30142393. The next prime is 30142423. The reversal of 30142403 is 30424103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30142403 - 2¹⁰ = 30141379 is a prime.

It is a super-2 number, since 2×30142403² = 1817128917228818, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30142423) 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, 15071201 + 15071202.

It is an arithmetic number, because the mean of its divisors is an integer number (15071202).

Almost surely, 2^30142403 is an apocalyptic number.

30142403 is a deficient number, since it is larger than the sum of its proper divisors (1).

30142403 is an equidigital number, since it uses as much as digits as its factorization.

30142403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30142403 is about 5490.2097409844. The cubic root of 30142403 is about 311.2141183240.

Adding to 30142403 its reverse (30424103), we get a palindrome (60566506).

The spelling of 30142403 in words is "thirty million, one hundred forty-two thousand, four hundred three".