145705107 has 4 divisors (see below), whose sum is σ = 194273480. Its totient is φ = 97136736.

The previous prime is 145705099. The next prime is 145705121. The reversal of 145705107 is 701507541.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 145705107 - 2³ = 145705099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145705507) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24284182 + ... + 24284187.

It is an arithmetic number, because the mean of its divisors is an integer number (48568370).

Almost surely, 2^145705107 is an apocalyptic number.

145705107 is a deficient number, since it is larger than the sum of its proper divisors (48568373).

145705107 is an equidigital number, since it uses as much as digits as its factorization.

145705107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48568372.

The product of its (nonzero) digits is 4900, while the sum is 30.

The square root of 145705107 is about 12070.8370463692. The cubic root of 145705107 is about 526.2089833996.

The spelling of 145705107 in words is "one hundred forty-five million, seven hundred five thousand, one hundred seven".