145120104 has 24 divisors (see below), whose sum is σ = 393033810. Its totient is φ = 48373344.

The previous prime is 145120091. The next prime is 145120121. The reversal of 145120104 is 401021541.

It can be written as a sum of positive squares in only one way, i.e., 90212004 + 54908100 = 9498^2 + 7410^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1007707 + ... + 1007850.

Almost surely, 2^145120104 is an apocalyptic number.

It is an amenable number.

145120104 is an abundant number, since it is smaller than the sum of its proper divisors (247913706).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

145120104 is a wasteful number, since it uses less digits than its factorization.

145120104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015569 (or 2015562 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 145120104 is about 12046.5805936789. The cubic root of 145120104 is about 525.5037993837.

Adding to 145120104 its reverse (401021541), we get a palindrome (546141645).

The spelling of 145120104 in words is "one hundred forty-five million, one hundred twenty thousand, one hundred four".