120003145 has 8 divisors (see below), whose sum is σ = 151583040. Its totient is φ = 90949680.

The previous prime is 120003127. The next prime is 120003151. The reversal of 120003145 is 541300021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120003145 - 2⁵ = 120003113 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 631501 + ... + 631690.

It is an arithmetic number, because the mean of its divisors is an integer number (18947880).

Almost surely, 2^120003145 is an apocalyptic number.

It is an amenable number.

120003145 is a deficient number, since it is larger than the sum of its proper divisors (31579895).

120003145 is a wasteful number, since it uses less digits than its factorization.

120003145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1263215.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 120003145 is about 10954.5946981164. The cubic root of 120003145 is about 493.2467238490.

Adding to 120003145 its reverse (541300021), we get a palindrome (661303166).

The spelling of 120003145 in words is "one hundred twenty million, three thousand, one hundred forty-five".