120640603 has 4 divisors (see below), whose sum is σ = 122293288. Its totient is φ = 118987920.

The previous prime is 120640601. The next prime is 120640613. The reversal of 120640603 is 306046021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 306046021 = 2551 ⋅119971.

It is a cyclic number.

It is not a de Polignac number, because 120640603 - 2¹ = 120640601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120640601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826233 + ... + 826378.

It is an arithmetic number, because the mean of its divisors is an integer number (30573322).

Almost surely, 2^120640603 is an apocalyptic number.

120640603 is a deficient number, since it is larger than the sum of its proper divisors (1652685).

120640603 is an equidigital number, since it uses as much as digits as its factorization.

120640603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652684.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 120640603 is about 10983.6516241185. The cubic root of 120640603 is about 494.1185592384.

Adding to 120640603 its reverse (306046021), we get a palindrome (426686624).

The spelling of 120640603 in words is "one hundred twenty million, six hundred forty thousand, six hundred three".