145120105 has 32 divisors (see below), whose sum is σ = 195197184. Its totient is φ = 102871296.

The previous prime is 145120091. The next prime is 145120121. The reversal of 145120105 is 501021541.

145120105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145120105 - 2⁷ = 145119977 is a prime.

It is a super-2 number, since 2×145120105² = 42119689750422050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199252 + ... + 199978.

It is an arithmetic number, because the mean of its divisors is an integer number (6099912).

Almost surely, 2^145120105 is an apocalyptic number.

It is an amenable number.

145120105 is a deficient number, since it is larger than the sum of its proper divisors (50077079).

145120105 is a wasteful number, since it uses less digits than its factorization.

145120105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 145120105 is about 12046.5806351844. The cubic root of 145120105 is about 525.5038005907.

Adding to 145120105 its reverse (501021541), we get a palindrome (646141646).

The spelling of 145120105 in words is "one hundred forty-five million, one hundred twenty thousand, one hundred five".