145142305 has 64 divisors (see below), whose sum is σ = 233238528. Its totient is φ = 84015360.

The previous prime is 145142299. The next prime is 145142339. The reversal of 145142305 is 503241541.

It is a happy number.

It is not a de Polignac number, because 145142305 - 2⁹ = 145141793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145142305.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 327414 + ... + 327856.

It is an arithmetic number, because the mean of its divisors is an integer number (3644352).

Almost surely, 2^145142305 is an apocalyptic number.

It is an amenable number.

145142305 is a deficient number, since it is larger than the sum of its proper divisors (88096223).

145142305 is a wasteful number, since it uses less digits than its factorization.

145142305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 145142305 is about 12047.5020232412. The cubic root of 145142305 is about 525.5305958431.

Adding to 145142305 its reverse (503241541), we get a palindrome (648383846).

The spelling of 145142305 in words is "one hundred forty-five million, one hundred forty-two thousand, three hundred five".