30142451 has 4 divisors (see below), whose sum is σ = 30653400. Its totient is φ = 29631504.

The previous prime is 30142439. The next prime is 30142477. The reversal of 30142451 is 15424103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15424103 = 701 ⋅22003.

It is a cyclic number.

It is not a de Polignac number, because 30142451 - 2¹⁸ = 29880307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30142481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255386 + ... + 255503.

It is an arithmetic number, because the mean of its divisors is an integer number (7663350).

Almost surely, 2^30142451 is an apocalyptic number.

30142451 is a deficient number, since it is larger than the sum of its proper divisors (510949).

30142451 is an equidigital number, since it uses as much as digits as its factorization.

30142451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510948.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 30142451 is about 5490.2141124004. The cubic root of 30142451 is about 311.2142835206.

Adding to 30142451 its reverse (15424103), we get a palindrome (45566554).

The spelling of 30142451 in words is "thirty million, one hundred forty-two thousand, four hundred fifty-one".