30245143 has 2 divisors, whose sum is σ = 30245144. Its totient is φ = 30245142.

The previous prime is 30245129. The next prime is 30245147. The reversal of 30245143 is 34154203.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30245143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30245147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15122571 + 15122572.

It is an arithmetic number, because the mean of its divisors is an integer number (15122572).

Almost surely, 2^30245143 is an apocalyptic number.

30245143 is a deficient number, since it is larger than the sum of its proper divisors (1).

30245143 is an equidigital number, since it uses as much as digits as its factorization.

30245143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 30245143 is about 5499.5584368202. The cubic root of 30245143 is about 311.5673071450.

Adding to 30245143 its reverse (34154203), we get a palindrome (64399346).

The spelling of 30245143 in words is "thirty million, two hundred forty-five thousand, one hundred forty-three".