120505503 has 16 divisors (see below), whose sum is σ = 170872416. Its totient is φ = 75279360.

The previous prime is 120505493. The next prime is 120505513. The reversal of 120505503 is 305505021.

It is an interprime number because it is at equal distance from previous prime (120505493) and next prime (120505513).

It is not a de Polignac number, because 120505503 - 2⁹ = 120504991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120505503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120505513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6813 + ... + 16953.

It is an arithmetic number, because the mean of its divisors is an integer number (10679526).

Almost surely, 2^120505503 is an apocalyptic number.

120505503 is a deficient number, since it is larger than the sum of its proper divisors (50366913).

120505503 is a wasteful number, since it uses less digits than its factorization.

120505503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10394.

The product of its (nonzero) digits is 750, while the sum is 21.

The square root of 120505503 is about 10977.4998519699. The cubic root of 120505503 is about 493.9340432739.

The spelling of 120505503 in words is "one hundred twenty million, five hundred five thousand, five hundred three".