145703999 has 32 divisors (see below), whose sum is σ = 178790400. Its totient is φ = 118540800.

The previous prime is 145703983. The next prime is 145704001. The reversal of 145703999 is 999307541.

It is not a de Polignac number, because 145703999 - 2⁴ = 145703983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145703099) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 754847 + ... + 755039.

It is an arithmetic number, because the mean of its divisors is an integer number (5587200).

Almost surely, 2^145703999 is an apocalyptic number.

145703999 is a deficient number, since it is larger than the sum of its proper divisors (33086401).

145703999 is an equidigital number, since it uses as much as digits as its factorization.

145703999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 302 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 145703999 is about 12070.7911505419. The cubic root of 145703999 is about 526.2076495616.

The spelling of 145703999 in words is "one hundred forty-five million, seven hundred three thousand, nine hundred ninety-nine".