145030305 has 32 divisors (see below), whose sum is σ = 274348800. Its totient is φ = 64012032.

The previous prime is 145030279. The next prime is 145030331. The reversal of 145030305 is 503030541.

It is an interprime number because it is at equal distance from previous prime (145030279) and next prime (145030331).

It is not a de Polignac number, because 145030305 - 2⁵ = 145030273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20770 + ... + 26859.

It is an arithmetic number, because the mean of its divisors is an integer number (8573400).

Almost surely, 2^145030305 is an apocalyptic number.

145030305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145030305 is a deficient number, since it is larger than the sum of its proper divisors (129318495).

145030305 is a wasteful number, since it uses less digits than its factorization.

145030305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47673.

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 145030305 is about 12042.8528596840. The cubic root of 145030305 is about 525.3953846953.

Adding to 145030305 its reverse (503030541), we get a palindrome (648060846).

The spelling of 145030305 in words is "one hundred forty-five million, thirty thousand, three hundred five".