30142951 has 2 divisors, whose sum is σ = 30142952. Its totient is φ = 30142950.

The previous prime is 30142927. The next prime is 30142993. The reversal of 30142951 is 15924103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30142951 - 2⁷ = 30142823 is a prime.

It is equal to p_1866220 and since 30142951 and 1866220 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30142051) 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, 15071475 + 15071476.

It is an arithmetic number, because the mean of its divisors is an integer number (15071476).

Almost surely, 2^30142951 is an apocalyptic number.

30142951 is a deficient number, since it is larger than the sum of its proper divisors (1).

30142951 is an equidigital number, since it uses as much as digits as its factorization.

30142951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 30142951 is about 5490.2596477762. The cubic root of 30142951 is about 311.2160043084.

The spelling of 30142951 in words is "thirty million, one hundred forty-two thousand, nine hundred fifty-one".