120503013 has 4 divisors (see below), whose sum is σ = 160670688. Its totient is φ = 80335340.

The previous prime is 120502981. The next prime is 120503023. The reversal of 120503013 is 310305021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120503013 - 2⁵ = 120502981 is a prime.

It is a super-2 number, since 2×120503013² = 29041952284156338, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 120502983 and 120503001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120503023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20083833 + ... + 20083838.

It is an arithmetic number, because the mean of its divisors is an integer number (40167672).

Almost surely, 2^120503013 is an apocalyptic number.

It is an amenable number.

120503013 is a deficient number, since it is larger than the sum of its proper divisors (40167675).

120503013 is an equidigital number, since it uses as much as digits as its factorization.

120503013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40167674.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 120503013 is about 10977.3864375816. The cubic root of 120503013 is about 493.9306412045.

Adding to 120503013 its reverse (310305021), we get a palindrome (430808034).

The spelling of 120503013 in words is "one hundred twenty million, five hundred three thousand, thirteen".