145719305 has 16 divisors (see below), whose sum is σ = 178282944. Its totient is φ = 114312000.

The previous prime is 145719271. The next prime is 145719307. The reversal of 145719305 is 503917541.

It is not a de Polignac number, because 145719305 - 2¹² = 145715209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145719307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83219 + ... + 84951.

It is an arithmetic number, because the mean of its divisors is an integer number (11142684).

Almost surely, 2^145719305 is an apocalyptic number.

It is an amenable number.

145719305 is a deficient number, since it is larger than the sum of its proper divisors (32563639).

145719305 is a wasteful number, since it uses less digits than its factorization.

145719305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 145719305 is about 12071.4251437020. The cubic root of 145719305 is about 526.2260747074.

The spelling of 145719305 in words is "one hundred forty-five million, seven hundred nineteen thousand, three hundred five".